0. Pinned Summary
My time machine, please go back to 2006-09-01 damn hot Hangzhou.
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3320 - Count The Number of Winning Sequences
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3319 - K-th Largest Perfect Subtree Size in Binary Tree
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3318 - Find X-Sum of All K-Long Subarrays I
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3317 - Find the Number of Possible Ways for an Event
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3316 - Find Maximum Removals From Source String
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3315 - Construct the Minimum Bitwise Array II
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3314 - Construct the Minimum Bitwise Array I
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3313 - Find the Last Marked Nodes in Tree
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3312 - Sorted GCD Pair Queries
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3311 - Construct 2D Grid Matching Graph Layout
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3310 - Remove Methods From Project
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3309 - Maximum Possible Number by Binary Concatenation
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3308 - Find Top Performing Driver
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3307 - Find the K-th Character in String Game II
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3306 - Count of Substrings Containing Every Vowel and K Consonants II
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3305 - Count of Substrings Containing Every Vowel and K Consonants I
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3304 - Find the K-th Character in String Game I
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3303 - Find the Occurrence of First Almost Equal Substring
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3302 - Find the Lexicographically Smallest Valid Sequence
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3301 - Maximize the Total Height of Unique Towers
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3300 - Minimum Element After Replacement With Digit Sum
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3299 - Sum of Consecutive Subsequences
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3298 - Count Substrings That Can Be Rearranged to Contain a String II
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3297 - Count Substrings That Can Be Rearranged to Contain a String I
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3296 - Minimum Number of Seconds to Make Mountain Height Zero
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3295 - Report Spam Message
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3294 - Convert Doubly Linked List to Array II
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3293 - Calculate Product Final Price
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3292 - Minimum Number of Valid Strings to Form Target II
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3291 - Minimum Number of Valid Strings to Form Target I
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3290 - Maximum Multiplication Score
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3289 - The Two Sneaky Numbers of Digitville
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3288 - Length of the Longest Increasing Path
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3287 - Find the Maximum Sequence Value of Array
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3286 - Find a Safe Walk Through a Grid
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3285 - Find Indices of Stable Mountains
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3284 - Sum of Consecutive Subarrays
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3283 - Maximum Number of Moves to Kill All Pawns
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3282 - Reach End of Array With Max Score
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3281 - Maximize Score of Numbers in Ranges
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3280 - Convert Date to Binary
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3279 - Maximum Total Area Occupied by Pistons
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3278 - Find Candidates for Data Scientist Position II
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3277 - Maximum XOR Score Subarray Queries
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3276 - Select Cells in Grid With Maximum Score
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3275 - K-th Nearest Obstacle Queries
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3274 - Check if Two Chessboard Squares Have the Same Color
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3273 - Minimum Amount of Damage Dealt to Bob
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3272 - Find the Count of Good Integers
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3271 - Hash Divided String
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3270 - Find the Key of the Numbers
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3269 - Constructing Two Increasing Arrays
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3268 - Find Overlapping Shifts II
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3267 - Count Almost Equal Pairs II
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3266 - Final Array State After K Multiplication Operations II
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3265 - Count Almost Equal Pairs I
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3264 - Final Array State After K Multiplication Operations I
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3263 - Convert Doubly Linked List to Array I
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3262 - Find Overlapping Shifts
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3261 - Count Substrings That Satisfy K-Constraint II
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3260 - Find the Largest Palindrome Divisible by K
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3259 - Maximum Energy Boost From Two Drinks
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3258 - Count Substrings That Satisfy K-Constraint I
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3257 - Maximum Value Sum by Placing Three Rooks II
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3256 - Maximum Value Sum by Placing Three Rooks I
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3255 - Find the Power of K-Size Subarrays II
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3254 - Find the Power of K-Size Subarrays I
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3253 - Construct String with Minimum Cost (Easy)
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3252 - Premier League Table Ranking II
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3251 - Find the Count of Monotonic Pairs II
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3250 - Find the Count of Monotonic Pairs I
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3249 - Count the Number of Good Nodes
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3248 - Snake in Matrix
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3247 - Number of Subsequences with Odd Sum
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3246 - Premier League Table Ranking
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3245 - Alternating Groups III
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3244 - Shortest Distance After Road Addition Queries II
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3243 - Shortest Distance After Road Addition Queries I
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3242 - Design Neighbor Sum Service
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3241 - Time Taken to Mark All Nodes
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3240 - Minimum Number of Flips to Make Binary Grid Palindromic II
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3239 - Minimum Number of Flips to Make Binary Grid Palindromic I
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3238 - Find the Number of Winning Players
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3237 - Alt and Tab Simulation
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3236 - CEO Subordinate Hierarchy
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3235 - Check if the Rectangle Corner Is Reachable
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3234 - Count the Number of Substrings With Dominant Ones
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3233 - Find the Count of Numbers Which Are Not Special
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3232 - Find if Digit Game Can Be Won
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3231 - Minimum Number of Increasing Subsequence to Be Removed
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3230 - Customer Purchasing Behavior Analysis
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3229 - Minimum Operations to Make Array Equal to Target
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3228 - Maximum Number of Operations to Move Ones to the End
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3227 - Vowels Game in a String
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3226 - Number of Bit Changes to Make Two Integers Equal
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3225 - Maximum Score From Grid Operations
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3224 - Minimum Array Changes to Make Differences Equal
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3223 - Minimum Length of String After Operations
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3222 - Find the Winning Player in Coin Game
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3221 - Maximum Array Hopping Score II
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3220 - Odd and Even Transactions
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3219 - Minimum Cost for Cutting Cake II
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3218 - Minimum Cost for Cutting Cake I
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3217 - Delete Nodes From Linked List Present in Array
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3216 - Lexicographically Smallest String After a Swap
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3215 - Count Triplets with Even XOR Set Bits II
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3214 - Year on Year Growth Rate
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3213 - Construct String with Minimum Cost
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3212 - Count Submatrices With Equal Frequency of X and Y
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3211 - Generate Binary Strings Without Adjacent Zeros
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3210 - Find the Encrypted String
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3209 - Number of Subarrays With AND Value of K
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3208 - Alternating Groups II
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3207 - Maximum Points After Enemy Battles
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3206 - Alternating Groups I
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3205 - Maximum Array Hopping Score I
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3204 - Bitwise User Permissions Analysis
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3203 - Find Minimum Diameter After Merging Two Trees
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3202 - Find the Maximum Length of Valid Subsequence II
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3201 - Find the Maximum Length of Valid Subsequence I
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3200 - Maximum Height of a Triangle
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3199 - Count Triplets with Even XOR Set Bits I
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3198 - Find Cities in Each State
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3197 - Find the Minimum Area to Cover All Ones II
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3196 - Maximize Total Cost of Alternating Subarrays
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3195 - Find the Minimum Area to Cover All Ones I
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3194 - Minimum Average of Smallest and Largest Elements
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3193 - Count the Number of Inversions
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3192 - Minimum Operations to Make Binary Array Elements Equal to One II
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3191 - Minimum Operations to Make Binary Array Elements Equal to One I
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3190 - Find Minimum Operations to Make All Elements Divisible by Three
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3189 - Minimum Moves to Get a Peaceful Board
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3188 - Find Top Scoring Students II
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3187 - Peaks in Array
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3186 - Maximum Total Damage With Spell Casting
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3185 - Count Pairs That Form a Complete Day II
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3184 - Count Pairs That Form a Complete Day I
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3183 - The Number of Ways to Make the Sum
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3182 - Find Top Scoring Students
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3181 - Maximum Total Reward Using Operations II
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3180 - Maximum Total Reward Using Operations I
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3179 - Find the N-th Value After K Seconds
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3178 - Find the Child Who Has the Ball After K Seconds
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3177 - Find the Maximum Length of a Good Subsequence II
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3176 - Find the Maximum Length of a Good Subsequence I
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3175 - Find The First Player to win K Games in a Row
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3174 - Clear Digits
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3173 - Bitwise OR of Adjacent Elements
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3172 - Second Day Verification
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3171 - Find Subarray With Bitwise OR Closest to K
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3170 - Lexicographically Minimum String After Removing Stars
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3169 - Count Days Without Meetings
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3168 - Minimum Number of Chairs in a Waiting Room
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3167 - Better Compression of String
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3166 - Calculate Parking Fees and Duration
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3165 - Maximum Sum of Subsequence With Non-adjacent Elements
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3164 - Find the Number of Good Pairs II
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3163 - String Compression III
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3162 - Find the Number of Good Pairs I
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3161 - Block Placement Queries
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3160 - Find the Number of Distinct Colors Among the Balls
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3159 - Find Occurrences of an Element in an Array
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3158 - Find the XOR of Numbers Which Appear Twice
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3157 - Find the Level of Tree with Minimum Sum
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3156 - Employee Task Duration and Concurrent Tasks
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3155 - Maximum Number of Upgradable Servers
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3154 - Find Number of Ways to Reach the K-th Stair
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3153 - Sum of Digit Differences of All Pairs
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3152 - Special Array II
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3151 - Special Array I
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3150 - Invalid Tweets II
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3149 - Find the Minimum Cost Array Permutation
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3148 - Maximum Difference Score in a Grid
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3147 - Taking Maximum Energy From the Mystic Dungeon
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3146 - Permutation Difference between Two Strings
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3145 - Find Products of Elements of Big Array
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3144 - Minimum Substring Partition of Equal Character Frequency
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3143 - Maximum Points Inside the Square
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3142 - Check if Grid Satisfies Conditions
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3141 - Maximum Hamming Distances
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3140 - Consecutive Available Seats II
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3139 - Minimum Cost to Equalize Array
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3138 - Minimum Length of Anagram Concatenation
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3137 - Minimum Number of Operations to Make Word K-Periodic
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3136 - Valid Word
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3135 - Equalize Strings by Adding or Removing Characters at Ends
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3134 - Find the Median of the Uniqueness Array
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3133 - Minimum Array End
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3132 - Find the Integer Added to Array II
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3131 - Find the Integer Added to Array I
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3130 - Find All Possible Stable Binary Arrays II
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3129 - Find All Possible Stable Binary Arrays I
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3128 - Right Triangles
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3127 - Make a Square with the Same Color
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3126 - Server Utilization Time
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3125 - Maximum Number That Makes Result of Bitwise AND Zero
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3124 - Find Longest Calls
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3123 - Find Edges in Shortest Paths
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3122 - Minimum Number of Operations to Satisfy Conditions
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3121 - Count the Number of Special Characters II
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3120 - Count the Number of Special Characters I
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3119 - Maximum Number of Potholes That Can Be Fixed
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3118 - Friday Purchase III
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3117 - Minimum Sum of Values by Dividing Array
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3116 - Kth Smallest Amount With Single Denomination Combination
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3115 - Maximum Prime Difference
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3114 - Latest Time You Can Obtain After Replacing Characters
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3113 - Find the Number of Subarrays Where Boundary Elements Are Maximum
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3112 - Minimum Time to Visit Disappearing Nodes
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3111 - Minimum Rectangles to Cover Points
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3110 - Score of a String
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3109 - Find the Index of Permutation
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3108 - Minimum Cost Walk in Weighted Graph
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3107 - Minimum Operations to Make Median of Array Equal to K
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3106 - Lexicographically Smallest String After Operations With Constraint
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3105 - Longest Strictly Increasing or Strictly Decreasing Subarray
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3104 - Find Longest Self-Contained Substring
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3103 - Find Trending Hashtags II
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3102 - Minimize Manhattan Distances
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3101 - Count Alternating Subarrays
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3100 - Water Bottles II
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3099 - Harshad Number
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3098 - Find the Sum of Subsequence Powers
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3097 - Shortest Subarray With OR at Least K II
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3096 - Minimum Levels to Gain More Points
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3095 - Shortest Subarray With OR at Least K I
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3094 - Guess the Number Using Bitwise Questions II
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3093 - Longest Common Suffix Queries
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3092 - Most Frequent IDs
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3091 - Apply Operations to Make Sum of Array Greater Than or Equal to k
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3090 - Maximum Length Substring With Two Occurrences
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3089 - Find Bursty Behavior
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3088 - Make String Anti-palindrome
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3087 - Find Trending Hashtags
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3086 - Minimum Moves to Pick K Ones
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3085 - Minimum Deletions to Make String K-Special
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3084 - Count Substrings Starting and Ending with Given Character
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3083 - Existence of a Substring in a String and Its Reverse
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3082 - Find the Sum of the Power of All Subsequences
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3081 - Replace Question Marks in String to Minimize Its Value
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3080 - Mark Elements on Array by Performing Queries
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3079 - Find the Sum of Encrypted Integers
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3078 - Match Alphanumerical Pattern in Matrix I
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3077 - Maximum Strength of K Disjoint Subarrays
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3076 - Shortest Uncommon Substring in an Array
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3075 - Maximize Happiness of Selected Children
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3074 - Apple Redistribution into Boxes
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3073 - Maximum Increasing Triplet Value
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3072 - Distribute Elements Into Two Arrays II
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3071 - Minimum Operations to Write the Letter Y on a Grid
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3070 - Count Submatrices with Top-Left Element and Sum Less Than k
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3069 - Distribute Elements Into Two Arrays I
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3068 - Find the Maximum Sum of Node Values
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3067 - Count Pairs of Connectable Servers in a Weighted Tree Network
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3066 - Minimum Operations to Exceed Threshold Value II
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3065 - Minimum Operations to Exceed Threshold Value I
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3064 - Guess the Number Using Bitwise Questions I
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3063 - Linked List Frequency
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3062 - Winner of the Linked List Game
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3061 - Calculate Trapping Rain Water
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3060 - User Activities within Time Bounds
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3059 - Find All Unique Email Domains
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3058 - Friends With No Mutual Friends
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3057 - Employees Project Allocation
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3056 - Snaps Analysis
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3055 - Top Percentile Fraud
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3054 - Binary Tree Nodes
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3053 - Classifying Triangles by Lengths
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3052 - Maximize Items
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3051 - Find Candidates for Data Scientist Position
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3050 - Pizza Toppings Cost Analysis
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3049 - Earliest Second to Mark Indices II
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3048 - Earliest Second to Mark Indices I
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3047 - Find the Largest Area of Square Inside Two Rectangles
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3046 - Split the Array
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3045 - Count Prefix and Suffix Pairs II
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3044 - Most Frequent Prime
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3043 - Find the Length of the Longest Common Prefix
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3042 - Count Prefix and Suffix Pairs I
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3041 - Maximize Consecutive Elements in an Array After Modification
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3040 - Maximum Number of Operations With the Same Score II
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3039 - Apply Operations to Make String Empty
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3038 - Maximum Number of Operations With the Same Score I
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3037 - Find Pattern in Infinite Stream II
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3036 - Number of Subarrays That Match a Pattern II
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3035 - Maximum Palindromes After Operations
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3034 - Number of Subarrays That Match a Pattern I
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3033 - Modify the Matrix
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3032 - Count Numbers With Unique Digits II
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3031 - Minimum Time to Revert Word to Initial State II
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3030 - Find the Grid of Region Average
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3029 - Minimum Time to Revert Word to Initial State I
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3028 - Ant on the Boundary
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3027 - Find the Number of Ways to Place People II
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3026 - Maximum Good Subarray Sum
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3025 - Find the Number of Ways to Place People I
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3024 - Type of Triangle II
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3023 - Find Pattern in Infinite Stream I
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3022 - Minimize OR of Remaining Elements Using Operations
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3021 - Alice and Bob Playing Flower Game
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3020 - Find the Maximum Number of Elements in Subset
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3019 - Number of Changing Keys
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3018 - Maximum Number of Removal Queries That Can Be Processed I
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3017 - Count the Number of Houses at a Certain Distance II
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3016 - Minimum Number of Pushes to Type Word II
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3015 - Count the Number of Houses at a Certain Distance I
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3014 - Minimum Number of Pushes to Type Word I
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3013 - Divide an Array Into Subarrays With Minimum Cost II
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3012 - Minimize Length of Array Using Operations
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908 - Smallest Range I
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3011 - Find if Array Can Be Sorted
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3010 - Divide an Array Into Subarrays With Minimum Cost I
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3009 - Maximum Number of Intersections on the Chart
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3008 - Find Beautiful Indices in the Given Array II
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3005 - Count Elements With Maximum Frequency
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3007 - Maximum Number That Sum of the Prices Is Less Than or Equal to K
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3004 - Maximum Subtree of the Same Color
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3006 - Find Beautiful Indices in the Given Array I
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3003 - Maximize the Number of Partitions After Operations
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3002 - Maximum Size of a Set After Removals
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3001 - Minimum Moves to Capture The Queen
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2985 - Calculate Compressed Mean
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2969 - Minimum Number of Coins for Fruits II
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3000 - Maximum Area of Longest Diagonal Rectangle
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2984 - Find Peak Calling Hours for Each City
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2968 - Apply Operations to Maximize Frequency Score
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2999 - Count the Number of Powerful Integers
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2983 - Palindrome Rearrangement Queries
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2967 - Minimum Cost to Make Array Equalindromic
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2998 - Minimum Number of Operations to Make X and Y Equal
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2982 - Find Longest Special Substring That Occurs Thrice II
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2966 - Divide Array Into Arrays With Max Difference
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2997 - Minimum Number of Operations to Make Array XOR Equal to K
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2981 - Find Longest Special Substring That Occurs Thrice I
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2965 - Find Missing and Repeated Values
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2996 - Smallest Missing Integer Greater Than Sequential Prefix Sum
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2980 - Check if Bitwise OR Has Trailing Zeros
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2964 - Number of Divisible Triplet Sums
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2995 - Viewers Turned Streamers
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2979 - Most Expensive Item That Can Not Be Bought
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2963 - Count the Number of Good Partitions
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2994 - Friday Purchases II
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2978 - Symmetric Coordinates
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2962 - Count Subarrays Where Max Element Appears at Least K Times
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2993 - Friday Purchases I
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2977 - Minimum Cost to Convert String II
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2961 - Double Modular Exponentiation
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2992 - Number of Self-Divisible Permutations
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2976 - Minimum Cost to Convert String I
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2960 - Count Tested Devices After Test Operations
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2991 - Top Three Wineries
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2975 - Maximum Square Area by Removing Fences From a Field
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2959 - Number of Possible Sets of Closing Branches
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2990 - Loan Types
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2974 - Minimum Number Game
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2958 - Length of Longest Subarray With at Most K Frequency
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2989 - Class Performance
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2973 - Find Number of Coins to Place in Tree Nodes
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2957 - Remove Adjacent Almost-Equal Characters
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2988 - Manager of the Largest Department
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2972 - Count the Number of Incremovable Subarrays II
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2956 - Find Common Elements Between Two Arrays
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2987 - Find Expensive Cities
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2971 - Find Polygon With the Largest Perimeter
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2955 - Number of Same-End Substrings
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2986 - Find Third Transaction
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2970 - Count the Number of Incremovable Subarrays I
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2954 - Count the Number of Infection Sequences
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2953 - Count Complete Substrings
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2952 - Minimum Number of Coins to be Added
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2951 - Find the Peaks
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2950 - Number of Divisible Substrings
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2949 - Count Beautiful Substrings II
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2948 - Make Lexicographically Smallest Array by Swapping Elements
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2947 - Count Beautiful Substrings I
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2946 - Matrix Similarity After Cyclic Shifts
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2945 - Find Maximum Non-decreasing Array Length
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2944 - Minimum Number of Coins for Fruits
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2943 - Maximize Area of Square Hole in Grid
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2942 - Find Words Containing Character
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2941 - Maximum GCD-Sum of a Subarray
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2940 - Find Building Where Alice and Bob Can Meet
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2939 - Maximum Xor Product
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2938 - Separate Black and White Balls
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2937 - Make Three Strings Equal
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2936 - Number of Equal Numbers Blocks
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2935 - Maximum Strong Pair XOR II
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2934 - Minimum Operations to Maximize Last Elements in Arrays
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2933 - High-Access Employees
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2932 - Maximum Strong Pair XOR I
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2931 - Maximum Spending After Buying Items
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2930 - Number of Strings Which Can Be Rearranged to Contain Substring
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2929 - Distribute Candies Among Children II
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2928 - Distribute Candies Among Children I
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2927 - Distribute Candies Among Children III
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2926 - Maximum Balanced Subsequence Sum
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2925 - Maximum Score After Applying Operations on a Tree
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2924 - Find Champion II
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2923 - Find Champion I
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2922 - Market Analysis III
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2921 - Maximum Profitable Triplets With Increasing Prices II
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2920 - Maximum Points After Collecting Coins From All Nodes
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2919 - Minimum Increment Operations to Make Array Beautiful
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2918 - Minimum Equal Sum of Two Arrays After Replacing Zeros
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2917 - Find the K-or of an Array
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2916 - Subarrays Distinct Element Sum of Squares II
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2915 - Length of the Longest Subsequence That Sums to Target
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2914 - Minimum Number of Changes to Make Binary String Beautiful
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2913 - Subarrays Distinct Element Sum of Squares I
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2912 - Number of Ways to Reach Destination in the Grid
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2911 - Minimum Changes to Make K Semi-palindromes
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2910 - Minimum Number of Groups to Create a Valid Assignment
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2909 - Minimum Sum of Mountain Triplets II
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2908 - Minimum Sum of Mountain Triplets I
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2907 - Maximum Profitable Triplets With Increasing Prices I
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2906 - Construct Product Matrix
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2905 - Find Indices With Index and Value Difference II
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2904 - Shortest and Lexicographically Smallest Beautiful String
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2903 - Find Indices With Index and Value Difference I
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2902 - Count of Sub-Multisets With Bounded Sum
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2901 - Longest Unequal Adjacent Groups Subsequence II
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2900 - Longest Unequal Adjacent Groups Subsequence I
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2899 - Last Visited Integers
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2898 - Maximum Linear Stock Score
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2897 - Apply Operations on Array to Maximize Sum of Squares
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2896 - Apply Operations to Make Two Strings Equal
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2895 - Minimum Processing Time
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2894 - Divisible and Non-divisible Sums Difference
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2893 - Calculate Orders Within Each Interval
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2892 - Minimizing Array After Replacing Pairs With Their Product
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2891 - Method Chaining
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2890 - Reshape Data Melt
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2889 - Reshape Data Pivot
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2888 - Reshape Data Concatenate
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2887 - Fill Missing Data
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2886 - Change Data Type
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2885 - Rename Columns
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2884 - Modify Columns
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2883 - Drop Missing Data
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2882 - Drop Duplicate Rows
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2881 - Create a New Column
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2880 - Select Data
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2879 - Display the First Three Rows
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2878 - Get the Size of a DataFrame
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2877 - Create a DataFrame from List
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2876 - Count Visited Nodes in a Directed Graph
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2875 - Minimum Size Subarray in Infinite Array
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2874 - Maximum Value of an Ordered Triplet II
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2873 - Maximum Value of an Ordered Triplet I
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2872 - Maximum Number of K-Divisible Components
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2871 - Split Array Into Maximum Number of Subarrays
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2870 - Minimum Number of Operations to Make Array Empty
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2869 - Minimum Operations to Collect Elements
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2868 - The Wording Game
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2867 - Count Valid Paths in a Tree
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2866 - Beautiful Towers II
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2865 - Beautiful Towers I
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2864 - Maximum Odd Binary Number
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2863 - Maximum Length of Semi-Decreasing Subarrays
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2862 - Maximum Element-Sum of a Complete Subset of Indices
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2861 - Maximum Number of Alloys
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2860 - Happy Students
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2859 - Sum of Values at Indices With K Set Bits
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2858 - Minimum Edge Reversals So Every Node Is Reachable
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2857 - Count Pairs of Points With Distance k
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2856 - Minimum Array Length After Pair Removals
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2855 - Minimum Right Shifts to Sort the Array
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2854 - Rolling Average Steps
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2853 - Highest Salaries Difference
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2852 - Sum of Remoteness of All Cells
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2851 - String Transformation
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2850 - Minimum Moves to Spread Stones Over Grid
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2849 - Determine if a Cell Is Reachable at a Given Time
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2848 - Points That Intersect With Cars
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2847 - Smallest Number With Given Digit Product
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2846 - Minimum Edge Weight Equilibrium Queries in a Tree
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2845 - Count of Interesting Subarrays
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2844 - Minimum Operations to Make a Special Number
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2843 - Count Symmetric Integers
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2842 - Count K-Subsequences of a String With Maximum Beauty
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2841 - Maximum Sum of Almost Unique Subarray
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2840 - Check if Strings Can be Made Equal With Operations II
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2839 - Check if Strings Can be Made Equal With Operations I
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2838 - Maximum Coins Heroes Can Collect
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2837 - Total Traveled Distance
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2836 - Maximize Value of Function in a Ball Passing Game
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2835 - Minimum Operations to Form Subsequence With Target Sum
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2834 - Find the Minimum Possible Sum of a Beautiful Array
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2833 - Furthest Point From Origin
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2832 - Maximal Range That Each Element Is Maximum in It
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2831 - Find the Longest Equal Subarray
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2830 - Maximize the Profit as the Salesman
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2829 - Determine the Minimum Sum of a k-avoiding Array
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2828 - Check if a String Is an Acronym of Words
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2827 - Number of Beautiful Integers in the Range
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2826 - Sorting Three Groups
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2825 - Make String a Subsequence Using Cyclic Increments
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2824 - Count Pairs Whose Sum is Less than Target
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2823 - Deep Object Filter
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2822 - Inversion of Object
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2821 - Delay the Resolution of Each Promise
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2820 - Election Results
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2819 - Minimum Relative Loss After Buying Chocolates
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2818 - Apply Operations to Maximize Score
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2817 - Minimum Absolute Difference Between Elements With Constraint
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2816 - Double a Number Represented as a Linked List
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2815 - Max Pair Sum in an Array
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2814 - Minimum Time Takes to Reach Destination Without Drowning
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2813 - Maximum Elegance of a K-Length Subsequence
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2812 - Find the Safest Path in a Grid
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2811 - Check if it is Possible to Split Array
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2810 - Faulty Keyboard
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2809 - Minimum Time to Make Array Sum At Most x
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2808 - Minimum Seconds to Equalize a Circular Array
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2807 - Insert Greatest Common Divisors in Linked List
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2806 - Account Balance After Rounded Purchase
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2805 - Custom Interval
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2804 - Array Prototype ForEach
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2803 - Factorial Generator
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2802 - Find The K-th Lucky Number
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2801 - Count Stepping Numbers in Range
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2800 - Shortest String That Contains Three Strings
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2799 - Count Complete Subarrays in an Array
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2798 - Number of Employees Who Met the Target
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2797 - Partial Function with Placeholders
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2796 - Repeat String
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2795 - Parallel Execution of Promises for Individual Results Retrieval
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2794 - Create Object from Two Arrays
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2793 - Status of Flight Tickets
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2792 - Count Nodes That Are Great Enough
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2791 - Count Paths That Can Form a Palindrome in a Tree
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2790 - Maximum Number of Groups With Increasing Length
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2789 - Largest Element in an Array after Merge Operations
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2788 - Split Strings by Separator
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2787 - Ways to Express an Integer as Sum of Powers
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2786 - Visit Array Positions to Maximize Score
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2785 - Sort Vowels in a String
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2784 - Check if Array is Good
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2783 - Flight Occupancy and Waitlist Analysis
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2782 - Number of Unique Categories
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2781 - Length of the Longest Valid Substring
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2780 - Minimum Index of a Valid Split
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2779 - Maximum Beauty of an Array After Applying Operation
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2778 - Sum of Squares of Special Elements
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2777 - Date Range Generator
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2776 - Convert Callback Based Function to Promise Based Function
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2775 - Undefined to Null
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2774 - Array Upper Bound
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2773 - Height of Special Binary Tree
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2772 - Apply Operations to Make All Array Elements Equal to Zero
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2771 - Longest Non-decreasing Subarray From Two Arrays
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2770 - Maximum Number of Jumps to Reach the Last Index
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2769 - Find the Maximum Achievable Number
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2768 - Number of Black Blocks
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2767 - Partition String Into Minimum Beautiful Substrings
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2766 - Relocate Marbles
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2765 - Longest Alternating Subarray
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2764 - Is Array a Preorder of Some Binary Tree
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2763 - Sum of Imbalance Numbers of All Subarrays
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2762 - Continuous Subarrays
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2761 - Prime Pairs With Target Sum
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2760 - Longest Even Odd Subarray With Threshold
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2759 - Convert JSON String to Object
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2758 - Next Day
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2757 - Generate Circular Array Values
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2756 - Query Batching
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2755 - Deep Merge of Two Objects
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2754 - Bind Function to Context
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2753 - Count Houses in a Circular Street II
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2752 - Customers with Maximum Number of Transactions on Consecutive Days
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2751 - Robot Collisions
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2750 - Ways to Split Array Into Good Subarrays
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2749 - Minimum Operations to Make the Integer Zero
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2748 - Number of Beautiful Pairs
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2747 - Count Zero Request Servers
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2746 - Decremental String Concatenation
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2745 - Construct the Longest New String
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2744 - Find Maximum Number of String Pairs
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2743 - Count Substrings Without Repeating Character
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2740 - Find the Value of the Partition
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2739 - Total Distance Traveled
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2738 - Count Occurrences in Text
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2737 - Find the Closest Marked Node
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2736 - Maximum Sum Queries
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2735 - Collecting Chocolates
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2734 - Lexicographically Smallest String After Substring Operation
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2733 - Neither Minimum nor Maximum
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2732 - Find a Good Subset of the Matrix
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2731 - Movement of Robots
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2730 - Find the Longest Semi-Repetitive Substring
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2729 - Check if The Number is Fascinating
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2728 - Count Houses in a Circular Street
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2727 - Is Object Empty
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2726 - Calculator with Method Chaining
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2725 - Interval Cancellation
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2723 - Add Two Promises
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2722 - Join Two Arrays by ID
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2721 - Execute Asynchronous Functions in Parallel
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2720 - Popularity Percentage
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2719 - Count of Integers
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2716 - Minimize String Length
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2715 - Timeout Cancellation
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2714 - Find Shortest Path with K Hops
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2713 - Maximum Strictly Increasing Cells in a Matrix
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2712 - Minimum Cost to Make All Characters Equal
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2709 - Greatest Common Divisor Traversal
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2704 - To Be Or Not To Be
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2692 - Make Object Immutable
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2690 - Infinite Method Object
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2689 - Extract Kth Character From The Rope Tree
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2687 - Bikes Last Time Used
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2686 - Immediate Food Delivery III
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2682 - Find the Losers of the Circular Game
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2678 - Number of Senior Citizens
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2677 - Chunk Array
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2665 - Counter II
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2664 - The Knight’s Tour
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2663 - Lexicographically Smallest Beautiful String
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2662 - Minimum Cost of a Path With Special Roads
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2661 - First Completely Painted Row or Column
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2641 - Cousins in Binary Tree II
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2577 - Minimum Time to Visit a Cell In a Grid
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2566 - Maximum Difference by Remapping a Digit
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2560 - House Robber IV
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2500 - Delete Greatest Value in Each Row
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2499 - Minimum Total Cost to Make Arrays Unequal
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2498 - Frog Jump II
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2477 - Minimum Fuel Cost to Report to the Capital
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2474 - Customers With Strictly Increasing Purchases
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2463 - Minimum Total Distance Traveled
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2456 - Most Popular Video Creator
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2433 - Find The Original Array of Prefix Xor
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2426 - Number of Pairs Satisfying Inequality
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2425 - Bitwise XOR of All Pairings
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2424 - Longest Uploaded Prefix
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2422 - Merge Operations to Turn Array Into a Palindrome
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2393 - Count Strictly Increasing Subarrays
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2392 - Build a Matrix With Conditions
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2391 - Minimum Amount of Time to Collect Garbage
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2390 - Removing Stars From a String
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2389 - Longest Subsequence With Limited Sum
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2388 - Change Null Values in a Table to the Previous Value
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2387 - Median of a Row Wise Sorted Matrix
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2386 - Find the K-Sum of an Array
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2385 - Amount of Time for Binary Tree to Be Infected
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2384 - Largest Palindromic Number
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2383 - Minimum Hours of Training to Win a Competition
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2382 - Maximum Segment Sum After Removals
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2381 - Shifting Letters II
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2380 - Time Needed to Rearrange a Binary String
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2379 - Minimum Recolors to Get K Consecutive Black Blocks
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2378 - Choose Edges to Maximize Score in a Tree
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2377 - Sort the Olympic Table
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2376 - Count Special Integers
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2375 - Construct Smallest Number From DI String
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2374 - Node With Highest Edge Score
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2373 - Largest Local Values in a Matrix
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2372 - Calculate the Influence of Each Salesperson
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2371 - Minimize Maximum Value in a Grid
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2370 - Longest Ideal Subsequence
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2369 - Check if There is a Valid Partition For The Array
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2368 - Reachable Nodes With Restrictions
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2367 - Number of Arithmetic Triplets
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2366 - Minimum Replacements to Sort the Array
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2365 - Task Scheduler II
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2364 - Count Number of Bad Pairs
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2363 - Merge Similar Items
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2362 - Generate the Invoice
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2361 - Minimum Costs Using the Train Line
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2360 - Longest Cycle in a Graph
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2359 - Find Closest Node to Given Two Nodes
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2358 - Maximum Number of Groups Entering a Competition
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2357 - Make Array Zero by Subtracting Equal Amounts
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2356 - Number of Unique Subjects Taught by Each Teacher
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2355 - Maximum Number of Books You Can Take
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2354 - Number of Excellent Pairs
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2353 - Design a Food Rating System
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2352 - Equal Row and Column Pairs
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2351 - First Letter to Appear Twice
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2350 - Shortest Impossible Sequence of Rolls
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2349 - Design a Number Container System
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2348 - Number of Zero-Filled Subarrays
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2347 - Best Poker Hand
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2346 - Compute the Rank as a Percentage
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2345 - Finding the Number of Visible Mountains
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2344 - Minimum Deletions to Make Array Divisible
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2343 - Query Kth Smallest Trimmed Number
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2342 - Max Sum of a Pair With Equal Sum of Digits
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2341 - Maximum Number of Pairs in Array
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2340 - Minimum Adjacent Swaps to Make a Valid Array
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2339 - All the Matches of the League
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2338 - Count the Number of Ideal Arrays
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2337 - Move Pieces to Obtain a String
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2336 - Smallest Number in Infinite Set
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2335 - Minimum Amount of Time to Fill Cups
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2334 - Subarray With Elements Greater Than Varying Threshold
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2333 - Minimum Sum of Squared Difference
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2332 - The Latest Time to Catch a Bus
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2331 - Evaluate Boolean Binary Tree
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2330 - Valid Palindrome IV
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2329 - Product Sales Analysis V
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2214 - Minimum Health to Beat Game
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2328 - Number of Increasing Paths in a Grid
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2327 - Number of People Aware of a Secret
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2326 - Spiral Matrix IV
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2325 - Decode the Message
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2324 - Product Sales Analysis IV
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2323 - Find Minimum Time to Finish All Jobs II
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2322 - Minimum Score After Removals on a Tree
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2321 - Maximum Score Of Spliced Array
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2320 - Count Number of Ways to Place Houses
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2319 - Check if Matrix Is X-Matrix
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2318 - Number of Distinct Roll Sequences
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2317 - Maximum XOR After Operations
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2315 - Count Asterisks
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2314 - The First Day of the Maximum Recorded Degree in Each City
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2313 - Minimum Flips in Binary Tree to Get Result
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2312 - Selling Pieces of Wood
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2311 - Longest Binary Subsequence Less Than or Equal to K
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2310 - Sum of Numbers With Units Digit K
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2309 - Greatest English Letter in Upper and Lower Case
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2308 - Arrange Table by Gender
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2307 - Check for Contradictions in Equations
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2306 - Naming a Company
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2305 - Fair Distribution of Cookies
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2304 - Minimum Path Cost in a Grid
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2303 - Calculate Amount Paid in Taxes
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2302 - Count Subarrays With Score Less Than K
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2301 - Match Substring After Replacement
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2300 - Successful Pairs of Spells and Potions
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2299 - Strong Password Checker II
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2298 - Tasks Count in the Weekend
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2297 - Jump Game VIII
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2296 - Design a Text Editor
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2295 - Replace Elements in an Array
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2294 - Partition Array Such That Maximum Difference Is K
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2293 - Min Max Game
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2292 - Products With Three or More Orders in Two Consecutive Years
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2291 - Maximum Profit From Trading Stocks
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2290 - Minimum Obstacle Removal to Reach Corner
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2289 - Steps to Make Array Non-decreasing
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2288 - Apply Discount to Prices
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2287 - Rearrange Characters to Make Target String
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2286 - Booking Concert Tickets in Groups
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2285 - Maximum Total Importance of Roads
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2284 - Sender With Largest Word Count
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2283 - Check if Number Has Equal Digit Count and Digit Value
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2282 - Number of People That Can Be Seen in a Grid
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2281 - Sum of Total Strength of Wizards
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2280 - Minimum Lines to Represent a Line Chart
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2279 - Maximum Bags With Full Capacity of Rocks
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2278 - Percentage of Letter in String
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2277 - Closest Node to Path in Tree
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2276 - Count Integers in Intervals
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2275 - Largest Combination With Bitwise AND Greater Than Zero
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2274 - Maximum Consecutive Floors Without Special Floors
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2273 - Find Resultant Array After Removing Anagrams
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2272 - Substring With Largest Variance
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2271 - Maximum White Tiles Covered by a Carpet
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2270 - Number of Ways to Split Array
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2269 - Find the K-Beauty of a Number
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2268 - Minimum Number of Keypresses
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2267 - Check if There Is a Valid Parentheses String Path
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2266 - Count Number of Texts
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2265 - Count Nodes Equal to Average of Subtree
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2264 - Largest 3-Same-Digit Number in String
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2263 - Make Array Non-decreasing or Non-increasing
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2261 - K Divisible Elements Subarrays
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2260 - Minimum Consecutive Cards to Pick Up
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2259 - Remove Digit From Number to Maximize Result
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2258 - Escape the Spreading Fire
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2257 - Count Unguarded Cells in the Grid
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2256 - Minimum Average Difference
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2255 - Count Prefixes of a Given String
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2254 - Design Video Sharing Platform
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2253 - Dynamic Unpivoting of a Table
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2252 - Dynamic Pivoting of a Table
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2251 - Number of Flowers in Full Bloom
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2250 - Count Number of Rectangles Containing Each Point
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2249 - Count Lattice Points Inside a Circle
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2248 - Intersection of Multiple Arrays
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2245 - Maximum Trailing Zeros in a Cornered Path
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2244 - Minimum Rounds to Complete All Tasks
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2243 - Calculate Digit Sum of a String
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2242 - Maximum Score of a Node Sequence
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2241 - Design an ATM Machine
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2240 - Number of Ways to Buy Pens and Pencils
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2239 - Find Closest Number to Zero
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2238 - Number of Times a Driver Was a Passenger
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2237 - Count Positions on Street With Required Brightness
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2236 - Root Equals Sum of Children
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2235 - Add Two Integers
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2234 - Maximum Total Beauty of the Gardens
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2233 - Maximum Product After K Increments
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2232 - Minimize Result by Adding Parentheses to Expression
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2231 - Largest Number After Digit Swaps by Parity
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2230 - The Users That Are Eligible for Discount
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2229 - Check if an Array Is Consecutive
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2228 - Users With Two Purchases Within Seven Days
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2227 - Encrypt and Decrypt Strings
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2226 - Maximum Candies Allocated to K Children
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2225 - Find Players With Zero or One Losses
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2224 - Minimum Number of Operations to Convert Time
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2223 - Sum of Scores of Built Strings
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2222 - Number of Ways to Select Buildings
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2221 - Find Triangular Sum of an Array
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2220 - Minimum Bit Flips to Convert Number
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2219 - Maximum Sum Score of Array
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2218 - Maximum Value of K Coins From Piles
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2217 - Find Palindrome With Fixed Length
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2216 - Minimum Deletions to Make Array Beautiful
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2215 - Find the Difference of Two Arrays
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2213 - Longest Substring of One Repeating Character
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2212 - Maximum Points in an Archery Competition
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2211 - Count Collisions on a Road
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2210 - Count Hills and Valleys in an Array
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2209 - Minimum White Tiles After Covering With Carpets
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2208 - Minimum Operations to Halve Array Sum
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2207 - Maximize Number of Subsequences in a String
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2206 - Divide Array Into Equal Pairs
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2205 - The Number of Users That Are Eligible for Discount
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2204 - Distance to a Cycle in Undirected Graph
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2203 - Minimum Weighted Subgraph With the Required Paths
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2202 - Maximize the Topmost Element After K Moves
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2201 - Count Artifacts That Can Be Extracted
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2200 - Find All K-Distant Indices in an Array
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2199 - Finding the Topic of Each Post
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2198 - Number of Single Divisor Triplets
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2197 - Replace Non-Coprime Numbers in Array
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2196 - Create Binary Tree From Descriptions
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2195 - Append K Integers With Minimal Sum
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2194 - Cells in a Range on an Excel Sheet
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2193 - Minimum Number of Moves to Make Palindrome
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2192 - All Ancestors of a Node in a Directed Acyclic Graph
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2191 - Sort the Jumbled Numbers
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2190 - Most Frequent Number Following Key In an Array
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2189 - Number of Ways to Build House of Cards
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2188 - Minimum Time to Finish the Race
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2187 - Minimum Time to Complete Trips
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2186 - Minimum Number of Steps to Make Two Strings Anagram II
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2185 - Counting Words With a Given Prefix
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2184 - Number of Ways to Build Sturdy Brick Wall
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2183 - Count Array Pairs Divisible by K
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2182 - Construct String With Repeat Limit
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2181 - Merge Nodes in Between Zeros
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2180 - Count Integers With Even Digit Sum
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2179 - Count Good Triplets in an Array
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2178 - Maximum Split of Positive Even Integers
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2177 - Find Three Consecutive Integers That Sum to a Given Number
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2176 - Count Equal and Divisible Pairs in an Array
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2175 - The Change in Global Rankings
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2174 - Remove All Ones With Row and Column Flips II
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2173 - Longest Winning Streak
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2172 - Maximum AND Sum of Array
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2171 - Removing Minimum Number of Magic Beans
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2170 - Minimum Operations to Make the Array Alternating
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2169 - Count Operations to Obtain Zero
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2168 - Unique Substrings With Equal Digit Frequency
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2167 - Minimum Time to Remove All Cars Containing Illegal Goods
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2166 - Design Bitset
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2165 - Smallest Value of the Rearranged Number
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2164 - Sort Even and Odd Indices Independently
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2163 - Minimum Difference in Sums After Removal of Elements
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2162 - Minimum Cost to Set Cooking Time
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2161 - Partition Array According to Given Pivot
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2160 - Minimum Sum of Four Digit Number After Splitting Digits
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2159 - Order Two Columns Independently
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2158 - Amount of New Area Painted Each Day
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2157 - Groups of Strings
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2156 - Find Substring With Given Hash Value
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2155 - All Divisions With the Highest Score of a Binary Array
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2154 - Keep Multiplying Found Values by Two
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2153 - The Number of Passengers in Each Bus II
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2152 - Minimum Number of Lines to Cover Points
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2151 - Maximum Good People Based on Statements
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2150 - Find All Lonely Numbers in the Array
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2149 - Rearrange Array Elements by Sign
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2147 - Number of Ways to Divide a Long Corridor
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2146 - K Highest Ranked Items Within a Price Range
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2145 - Count the Hidden Sequences
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2144 - Minimum Cost of Buying Candies With Discount
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2143 - Choose Numbers From Two Arrays in Range
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2142 - The Number of Passengers in Each Bus I
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2141 - Maximum Running Time of N Computers
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2140 - Solving Questions With Brainpower
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2139 - Minimum Moves to Reach Target Score
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2138 - Divide a String Into Groups of Size k
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2137 - Pour Water Between Buckets to Make Water Levels Equal
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2136 - Earliest Possible Day of Full Bloom
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2135 - Count Words Obtained After Adding a Letter
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2134 - Minimum Swaps to Group All 1's Together II
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2131 - Longest Palindrome by Concatenating Two Letter Words
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2130 - Maximum Twin Sum of a Linked List
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2129 - Capitalize the Title
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2128 - Remove All Ones With Row and Column Flips
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2127 - Maximum Employees to Be Invited to a Meeting
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2126 - Destroying Asteroids
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2124 - Check if All A's Appears Before All B's
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2123 - Minimum Operations to Remove Adjacent Ones in Matrix
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2122 - Recover the Original Array
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2121 - Intervals Between Identical Elements
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2120 - Execution of All Suffix Instructions Staying in a Grid
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2118 - Build the Equation
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2117 - Abbreviating the Product of a Range
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2116 - Check if a Parentheses String Can Be Valid
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2115 - Find All Possible Recipes from Given Supplies
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2114 - Maximum Number of Words Found in Sentences
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2113 - Elements in Array After Removing and Replacing Elements
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2111 - Minimum Operations to Make the Array K-Increasing
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2108 - Find First Palindromic String in the Array
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2107 - Number of Unique Flavors After Sharing K Candies
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2106 - Maximum Fruits Harvested After at Most K Steps
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2105 - Watering Plants II
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2104 - Sum of Subarray Ranges
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2103 - Rings and Rods
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2102 - Sequentially Ordinal Rank Tracker
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2101 - Detonate the Maximum Bombs
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2100 - Find Good Days to Rob the Bank
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2099 - Find Subsequence of Length K With the Largest Sum
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2088 - Count Fertile Pyramids in a Land
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2087 - Minimum Cost Homecoming of a Robot in a Grid
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2086 - Minimum Number of Food Buckets to Feed the Hamsters
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2085 - Count Common Words With One Occurrence
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2084 - Drop Type 1 Orders for Customers With Type 0 Orders
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2083 - Substrings That Begin and End With the Same Letter
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2082 - The Number of Rich Customers
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2081 - Sum of k-Mirror Numbers
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2080 - Range Frequency Queries
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2079 - Watering Plants
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2078 - Two Furthest Houses With Different Colors
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2077 - Paths in Maze That Lead to Same Room
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2076 - Process Restricted Friend Requests
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2075 - Decode the Slanted Ciphertext
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2074 - Reverse Nodes in Even Length Groups
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2073 - Time Needed to Buy Tickets
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2072 - The Winner University
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2071 - Maximum Number of Tasks You Can Assign
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2070 - Most Beautiful Item for Each Query
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2069 - Walking Robot Simulation II
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2068 - Check Whether Two Strings are Almost Equivalent
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2067 - Number of Equal Count Substrings
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2066 - Account Balance
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2065 - Maximum Path Quality of a Graph
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2064 - Minimized Maximum of Products Distributed to Any Store
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2063 - Vowels of All Substrings
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2062 - Count Vowel Substrings of a String
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2061 - Number of Spaces Cleaning Robot Cleaned
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2060 - Check if an Original String Exists Given Two Encoded Strings
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2059 - Minimum Operations to Convert Number
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2058 - Find the Minimum and Maximum Number of Nodes Between Critical Points
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2057 - Smallest Index With Equal Value
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2056 - Number of Valid Move Combinations On Chessboard
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2055 - Plates Between Candles
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2054 - Two Best Non-Overlapping Events
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2053 - Kth Distinct String in an Array
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2052 - Minimum Cost to Separate Sentence Into Rows
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2051 - The Category of Each Member in the Store
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2050 - Parallel Courses III
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2049 - Count Nodes With the Highest Score
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2048 - Next Greater Numerically Balanced Number
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2047 - Number of Valid Words in a Sentence
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2046 - Sort Linked List Already Sorted Using Absolute Values
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2045 - Second Minimum Time to Reach Destination
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2044 - Count Number of Maximum Bitwise-OR Subsets
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2043 - Simple Bank System
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2042 - Check if Numbers Are Ascending in a Sentence
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2041 - Accepted Candidates From the Interviews
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2040 - Kth Smallest Product of Two Sorted Arrays
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2039 - The Time When the Network Becomes Idle
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2038 - Remove Colored Pieces if Both Neighbors are the Same Color
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2037 - Minimum Number of Moves to Seat Everyone
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2036 - Maximum Alternating Subarray Sum
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2035 - Partition Array Into Two Arrays to Minimize Sum Difference
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2034 - Stock Price Fluctuation
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2033 - Minimum Operations to Make a Uni-Value Grid
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2032 - Two Out of Three
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2031 - Count Subarrays With More Ones Than Zeros
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2030 - Smallest K-Length Subsequence With Occurrences of a Letter
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2029 - Stone Game IX
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2028 - Find Missing Observations
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2027 - Minimum Moves to Convert String
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2026 - Low-Quality Problems
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2025 - Maximum Number of Ways to Partition an Array
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2024 - Maximize the Confusion of an Exam
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2023 - Number of Pairs of Strings With Concatenation Equal to Target
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2022 - Convert 1D Array Into 2D Array
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2021 - Brightest Position on Street
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2020 - Number of Accounts That Did Not Stream
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2019 - The Score of Students Solving Math Expression
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2018 - Check if Word Can Be Placed In Crossword
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2017 - Grid Game
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2016 - Maximum Difference Between Increasing Elements
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2015 - Average Height of Buildings in Each Segment
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2014 - Longest Subsequence Repeated k Times
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2013 - Detect Squares
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2012 - Sum of Beauty in the Array
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2011 - Final Value of Variable After Performing Operations
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2010 - The Number of Seniors and Juniors to Join the Company II
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2009 - Minimum Number of Operations to Make Array Continuous
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2008 - Maximum Earnings From Taxi
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2007 - Find Original Array From Doubled Array
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2006 - Count Number of Pairs With Absolute Difference K
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2005 - Subtree Removal Game with Fibonacci Tree
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2004 - The Number of Seniors and Juniors to Join the Company
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2003 - Smallest Missing Genetic Value in Each Subtree
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2002 - Maximum Product of the Length of Two Palindromic Subsequences
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2001 - Number of Pairs of Interchangeable Rectangles
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2000 - Reverse Prefix of Word
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1999 - Smallest Greater Multiple Made of Two Digits
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1998 - GCD Sort of an Array
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1997 - First Day Where You Have Been in All the Rooms
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1996 - The Number of Weak Characters in the Game
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1995 - Count Special Quadruplets
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1994 - The Number of Good Subsets
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1993 - Operations on Tree
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1992 - Find All Groups of Farmland
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1991 - Find the Middle Index in Array
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1990 - Count the Number of Experiments
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1989 - Maximum Number of People That Can Be Caught in Tag
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1988 - Find Cutoff Score for Each School
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1987 - Number of Unique Good Subsequences
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1986 - Minimum Number of Work Sessions to Finish the Tasks
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1985 - Find the Kth Largest Integer in the Array
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1984 - Minimum Difference Between Highest and Lowest of K Scores
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1983 - Widest Pair of Indices With Equal Range Sum
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1982 - Find Array Given Subset Sums
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1981 - Minimize the Difference Between Target and Chosen Elements
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1980 - Find Unique Binary String
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1979 - Find Greatest Common Divisor of Array
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1978 - Employees Whose Manager Left the Company
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1977 - Number of Ways to Separate Numbers
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1976 - Number of Ways to Arrive at Destination
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1975 - Maximum Matrix Sum
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1974 - Minimum Time to Type Word Using Special Typewriter
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1973 - Count Nodes Equal to Sum of Descendants
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1972 - First and Last Call On the Same Day
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1971 - Find if Path Exists in Graph
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1970 - Last Day Where You Can Still Cross
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1969 - Minimum Non-Zero Product of the Array Elements
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1968 - Array With Elements Not Equal to Average of Neighbors
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1967 - Number of Strings That Appear as Substrings in Word
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1966 - Binary Searchable Numbers in an Unsorted Array
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1965 - Employees With Missing Information
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1964 - Find the Longest Valid Obstacle Course at Each Position
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1963 - Minimum Number of Swaps to Make the String Balanced
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1962 - Remove Stones to Minimize the Total
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1961 - Check If String Is a Prefix of Array
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1960 - Maximum Product of the Length of Two Palindromic Substrings
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1959 - Minimum Total Space Wasted With K Resizing Operations
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1958 - Check if Move is Legal
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1957 - Delete Characters to Make Fancy String
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1956 - Minimum Time For K Virus Variants to Spread
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1955 - Count Number of Special Subsequences
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1954 - Minimum Garden Perimeter to Collect Enough Apples
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1953 - Maximum Number of Weeks for Which You Can Work
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1952 - Three Divisors
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1951 - All the Pairs With the Maximum Number of Common Followers
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1950 - Maximum of Minimum Values in All Subarrays
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1949 - Strong Friendship
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1948 - Delete Duplicate Folders in System
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1947 - Maximum Compatibility Score Sum
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1746 - Maximum Subarray Sum After One Operation
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1946 - Largest Number After Mutating Substring
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1745 - Palindrome Partitioning IV
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1945 - Sum of Digits of String After Convert
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1944 - Number of Visible People in a Queue
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1943 - Describe the Painting
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1942 - The Number of the Smallest Unoccupied Chair
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1941 - Check if All Characters Have Equal Number of Occurrences
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1940 - Longest Common Subsequence Between Sorted Arrays
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1939 - Users That Actively Request Confirmation Messages
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1938 - Maximum Genetic Difference Query
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1937 - Maximum Number of Points with Cost
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1936 - Add Minimum Number of Rungs
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1935 - Maximum Number of Words You Can Type
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1934 - Confirmation Rate
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1933 - Check if String Is Decomposable Into Value-Equal Substrings
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1932 - Merge BSTs to Create Single BST
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1931 - Painting a Grid With Three Different Colors
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1930 - Unique Length-3 Palindromic Subsequences
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1929 - Concatenation of Array
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1928 - Minimum Cost to Reach Destination in Time
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1927 - Sum Game
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1926 - Nearest Exit from Entrance in Maze
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1925 - Count Square Sum Triples
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1924 - Erect the Fence II
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1923 - Longest Common Subpath
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1922 - Count Good Numbers
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1921 - Eliminate Maximum Number of Monsters
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1920 - Build Array from Permutation
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1919 - Leetcodify Similar Friends
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1918 - Kth Smallest Subarray Sum
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1917 - Leetcodify Friends Recommendations
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1916 - Count Ways to Build Rooms in an Ant Colony
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1915 - Number of Wonderful Substrings
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1914 - Cyclically Rotating a Grid
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1913 - Maximum Product Difference Between Two Pairs
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1912 - Design Movie Rental System
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1911 - Maximum Alternating Subsequence Sum
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1910 - Remove All Occurrences of a Substring
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1909 - Remove One Element to Make the Array Strictly Increasing
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1908 - Game of Nim
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1907 - Count Salary Categories
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1906 - Minimum Absolute Difference Queries
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1905 - Count Sub Islands
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1904 - The Number of Full Rounds You Have Played
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1903 - Largest Odd Number in String
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1902 - Depth of BST Given Insertion Order
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1901 - Find a Peak Element II
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1900 - The Earliest and Latest Rounds Where Players Compete
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1899 - Merge Triplets to Form Target Triplet
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1898 - Maximum Number of Removable Characters
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1897 - Redistribute Characters to Make All Strings Equal
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1896 - Minimum Cost to Change the Final Value of Expression
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1895 - Largest Magic Square
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1894 - Find the Student that Will Replace the Chalk
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1893 - Check if All the Integers in a Range Are Covered
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1892 - Page Recommendations II
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1891 - Cutting Ribbons
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1890 - The Latest Login in 2020
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1889 - Minimum Space Wasted From Packaging
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1888 - Minimum Number of Flips to Make the Binary String Alternating
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1887 - Reduction Operations to Make the Array Elements Equal
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1886 - Determine Whether Matrix Can Be Obtained By Rotation
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1885 - Count Pairs in Two Arrays
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1884 - Egg Drop With 2 Eggs and N Floors
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1883 - Minimum Skips to Arrive at Meeting On Time
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1882 - Process Tasks Using Servers
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1881 - Maximum Value after Insertion
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1880 - Check if Word Equals Summation of Two Words
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1879 - Minimum XOR Sum of Two Arrays
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1878 - Get Biggest Three Rhombus Sums in a Grid
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1877 - Minimize Maximum Pair Sum in Array
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1876 - Substrings of Size Three with Distinct Characters
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1875 - Group Employees of the Same Salary
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1874 - Minimize Product Sum of Two Arrays
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1873 - Calculate Special Bonus
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1872 - Stone Game VIII
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1871 - Jump Game VII
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1870 - Minimum Speed to Arrive on Time
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1869 - Longer Contiguous Segments of Ones than Zeros
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1868 - Product of Two Run-Length Encoded Arrays
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1867 - Orders With Maximum Quantity Above Average
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1866 - Number of Ways to Rearrange Sticks With K Sticks Visible
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1865 - Finding Pairs With a Certain Sum
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1864 - Minimum Number of Swaps to Make the Binary String Alternating
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1863 - Sum of All Subset XOR Totals
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1862 - Sum of Floored Pairs
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1861 - Rotating the Box
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1860 - Incremental Memory Leak
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1859 - Sorting the Sentence
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1858 - Longest Word With All Prefixes
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1857 - Largest Color Value in a Directed Graph
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1856 - Maximum Subarray Min-Product
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1855 - Maximum Distance Between a Pair of Values
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1854 - Maximum Population Year
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1853 - Convert Date Format
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1852 - Distinct Numbers in Each Subarray
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1851 - Minimum Interval to Include Each Query
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1850 - Minimum Adjacent Swaps to Reach the Kth Smallest Number
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1849 - Splitting a String Into Descending Consecutive Values
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1848 - Minimum Distance to the Target Element
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1847 - Closest Room
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1846 - Maximum Element After Decreasing and Rearranging
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1845 - Seat Reservation Manager
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1844 - Replace All Digits with Characters
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1843 - Suspicious Bank Accounts
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1842 - Next Palindrome Using Same Digits
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1841 - League Statistics
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1840 - Maximum Building Height
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1839 - Longest Substring Of All Vowels in Order
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1838 - Frequency of the Most Frequent Element
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1837 - Sum of Digits in Base K
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1836 - Remove Duplicates From an Unsorted Linked List
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1835 - Find XOR Sum of All Pairs Bitwise AND
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1834 - Single-Threaded CPU
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1833 - Maximum Ice Cream Bars
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1832 - Check if the Sentence Is Pangram
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1831 - Maximum Transaction Each Day
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1830 - Minimum Number of Operations to Make String Sorted
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1829 - Maximum XOR for Each Query
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1828 - Queries on Number of Points Inside a Circle
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1827 - Minimum Operations to Make the Array Increasing
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1826 - Faulty Sensor
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1825 - Finding MK Average
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1824 - Minimum Sideway Jumps
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1823 - Find the Winner of the Circular Game
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1822 - Sign of the Product of an Array
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1821 - Find Customers With Positive Revenue this Year
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1820 - Maximum Number of Accepted Invitations
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1819 - Number of Different Subsequences GCDs
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1818 - Minimum Absolute Sum Difference
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1817 - Finding the Users Active Minutes
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1816 - Truncate Sentence
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1815 - Maximum Number of Groups Getting Fresh Donuts
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1814 - Count Nice Pairs in an Array
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1813 - Sentence Similarity III
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1812 - Determine Color of a Chessboard Square
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1811 - Find Interview Candidates
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1810 - Minimum Path Cost in a Hidden Grid
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1809 - Ad-Free Sessions
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1808 - Maximize Number of Nice Divisors
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1807 - Evaluate the Bracket Pairs of a String
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1806 - Minimum Number of Operations to Reinitialize a Permutation
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1805 - Number of Different Integers in a String
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1804 - Implement Trie II (Prefix Tree)
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1803 - Count Pairs With XOR in a Range
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1802 - Maximum Value at a Given Index in a Bounded Array
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1801 - Number of Orders in the Backlog
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1800 - Maximum Ascending Subarray Sum
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1799 - Maximize Score After N Operations
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1798 - Maximum Number of Consecutive Values You Can Make
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1797 - Design Authentication Manager
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1796 - Second Largest Digit in a String
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1795 - Rearrange Products Table
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1794 - Count Pairs of Equal Substrings With Minimum Difference
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1793 - Maximum Score of a Good Subarray
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1792 - Maximum Average Pass Ratio
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1791 - Find Center of Star Graph
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1790 - Check if One String Swap Can Make Strings Equal
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1789 - Primary Department for Each Employee
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1788 - Maximize the Beauty of the Garden
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1787 - Make the XOR of All Segments Equal to Zero
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1786 - Number of Restricted Paths From First to Last Node
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1785 - Minimum Elements to Add to Form a Given Sum
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1782 - Count Pairs Of Nodes
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1781 - Sum of Beauty of All Substrings
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1780 - Check if Number is a Sum of Powers of Three
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1779 - Find Nearest Point That Has the Same X or Y Coordinate
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1778 - Shortest Path in a Hidden Grid
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1777 - Product's Price for Each Store
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1776 - Car Fleet II
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1775 - Equal Sum Arrays With Minimum Number of Operations
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1774 - Closest Dessert Cost
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1773 - Count Items Matching a Rule
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1772 - Sort Features by Popularity
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1771 - Maximize Palindrome Length From Subsequences
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1770 - Maximum Score from Performing Multiplication Operations
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1769 - Minimum Number of Operations to Move All Balls to Each Box
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1768 - Merge Strings Alternately
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1767 - Find the Subtasks That Did Not Execute
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1766 - Tree of Coprimes
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1765 - Map of Highest Peak
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1764 - Form Array by Concatenating Subarrays of Another Array
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1763 - Longest Nice Substring
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1762 - Buildings With an Ocean View
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1761 - Minimum Degree of a Connected Trio in a Graph
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1760 - Minimum Limit of Balls in a Bag
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1759 - Count Number of Homogenous Substrings
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1758 - Minimum Changes To Make Alternating Binary String
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1757 - Recyclable and Low Fat Products
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1756 - Design Most Recently Used Queue
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1755 - Closest Subsequence Sum
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1754 - Largest Merge Of Two Strings
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1753 - Maximum Score From Removing Stones
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1752 - Check if Array Is Sorted and Rotated
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1751 - Maximum Number of Events That Can Be Attended II
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1750 - Minimum Length of String After Deleting Similar Ends
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1749 - Maximum Absolute Sum of Any Subarray
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1748 - Sum of Unique Elements
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1747 - Leetflex Banned Accounts
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1744 - Can You Eat Your Favorite Candy on Your Favorite Day
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1743 - Restore the Array From Adjacent Pairs
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1742 - Maximum Number of Balls in a Box
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1741 - Find Total Time Spent by Each Employee
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1740 - Find Distance in a Binary Tree
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1739 - Building Boxes
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1738 - Find Kth Largest XOR Coordinate Value
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1737 - Change Minimum Characters to Satisfy One of Three Conditions
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1736 - Latest Time by Replacing Hidden Digits
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1735 - Count Ways to Make Array With Product
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1734 - Decode XORed Permutation
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1733 - Minimum Number of People to Teach
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1732 - Find the Highest Altitude
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1731 - The Number of Employees Which Report to Each Employee
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1730 - Shortest Path to Get Food
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1729 - Find Followers Count
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1728 - Cat and Mouse II
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1727 - Largest Submatrix With Rearrangements
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1726 - Tuple with Same Product
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1725 - Number Of Rectangles That Can Form The Largest Square
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1724 - Checking Existence of Edge Length Limited Paths II
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1723 - Find Minimum Time to Finish All Jobs
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1722 - Minimize Hamming Distance After Swap Operations
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1721 - Swapping Nodes in a Linked List
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1720 - Decode XORed Array
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1719 - Number Of Ways To Reconstruct A Tree
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1718 - Construct the Lexicographically Largest Valid Sequence
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1717 - Maximum Score From Removing Substrings
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1716 - Calculate Money in Leetcode Bank
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1715 - Count Apples and Oranges
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1714 - Sum Of Special Evenly-Spaced Elements In Array
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1713 - Minimum Operations to Make a Subsequence
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1712 - Ways to Split Array Into Three Subarrays
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1711 - Count Good Meals
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1710 - Maximum Units on a Truck
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1709 - Biggest Window Between Visits
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1708 - Largest Subarray Length K
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1707 - Maximum XOR With an Element From Array
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1706 - Where Will the Ball Fall
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1705 - Maximum Number of Eaten Apples
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1704 - Determine if String Halves Are Alike
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1703 - Minimum Adjacent Swaps for K Consecutive Ones
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1702 - Maximum Binary String After Change
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1701 - Average Waiting Time
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1700 - Number of Students Unable to Eat Lunch
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1699 - Number of Calls Between Two Persons
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1698 - Number of Distinct Substrings in a String
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1697 - Checking Existence of Edge Length Limited Paths
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1696 - Jump Game VI
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1695 - Maximum Erasure Value
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1694 - Reformat Phone Number
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1693 - Daily Leads and Partners
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1692 - Count Ways to Distribute Candies
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1691 - Maximum Height by Stacking Cuboids
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1690 - Stone Game VII
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1689 - Partitioning Into Minimum Number Of Deci-Binary Numbers
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1688 - Count of Matches in Tournament
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1687 - Delivering Boxes from Storage to Ports
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1686 - Stone Game VI
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1685 - Sum of Absolute Differences in a Sorted Array
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1684 - Count the Number of Consistent Strings
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1683 - Invalid Tweets
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1682 - Longest Palindromic Subsequence II
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1681 - Minimum Incompatibility
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1680 - Concatenation of Consecutive Binary Numbers
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1679 - Max Number of K-Sum Pairs
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1678 - Goal Parser Interpretation
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1677 - Product's Worth Over Invoices
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1676 - Lowest Common Ancestor of a Binary Tree IV
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1675 - Minimize Deviation in Array
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1674 - Minimum Moves to Make Array Complementary
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1673 - Find the Most Competitive Subsequence
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1672 - Richest Customer Wealth
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1671 - Minimum Number of Removals to Make Mountain Array
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1670 - Design Front Middle Back Queue
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1669 - Merge In Between Linked Lists
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1668 - Maximum Repeating Substring
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1667 - Fix Names in a Table
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1666 - Change the Root of a Binary Tree
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1665 - Minimum Initial Energy to Finish Tasks
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1664 - Ways to Make a Fair Array
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1663 - Smallest String With A Given Numeric Value
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1662 - Check If Two String Arrays are Equivalent
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1661 - Average Time of Process per Machine
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1660 - Correct a Binary Tree
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1659 - Maximize Grid Happiness
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1658 - Minimum Operations to Reduce X to Zero
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1657 - Determine if Two Strings Are Close
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1656 - Design an Ordered Stream
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1655 - Distribute Repeating Integers
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1654 - Minimum Jumps to Reach Home
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1652 - Defuse the Bomb
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1651 - Hopper Company Queries III
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1650 - Lowest Common Ancestor of a Binary Tree III
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1649 - Create Sorted Array through Instructions
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1647 - Minimum Deletions to Make Character Frequencies Unique
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1646 - Get Maximum in Generated Array
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1645 - Hopper Company Queries II
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1644 - Lowest Common Ancestor of a Binary Tree II
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1643 - Kth Smallest Instructions
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1642 - Furthest Building You Can Reach
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1641 - Count Sorted Vowel Strings
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1640 - Check Array Formation Through Concatenation
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1639 - Number of Ways to Form a Target String Given a Dictionary
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1638 - Count Substrings That Differ by One Character
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1637 - Widest Vertical Area Between Two Points Containing No Points
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1636 - Sort Array by Increasing Frequency
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1635 - Hopper Company Queries I
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1634 - Add Two Polynomials Represented as Linked Lists
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1633 - Percentage of Users Attended a Contest
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1632 - Rank Transform of a Matrix
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1631 - Path With Minimum Effort
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1630 - Arithmetic Subarrays
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1629 - Slowest Key
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1628 - Design an Expression Tree With Evaluate Function
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1627 - Graph Connectivity With Threshold
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1626 - Best Team With No Conflicts
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1625 - Lexicographically Smallest String After Applying Operations
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1624 - Largest Substring Between Two Equal Characters
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1623 - All Valid Triplets That Can Represent a Country
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1622 - Fancy Sequence
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1621 - Number of Sets of K Non-Overlapping Line Segments
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1620 - Coordinate With Maximum Network Quality
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1619 - Mean of Array After Removing Some Elements
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1618 - Maximum Font to Fit a Sentence in a Screen
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1617 - Count Subtrees With Max Distance Between Cities
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1616 - Split Two Strings to Make Palindrome
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1615 - Maximal Network Rank
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1614 - Maximum Nesting Depth of the Parentheses
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1613 - Find the Missing IDs
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1612 - Check If Two Expression Trees are Equivalent
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1611 - Minimum One Bit Operations to Make Integers Zero
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1610 - Maximum Number of Visible Points
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1609 - Even Odd Tree
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1608 - Special Array With X Elements Greater Than or Equal X
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1607 - Sellers With No Sales
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1606 - Find Servers That Handled Most Number of Requests
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1605 - Find Valid Matrix Given Row and Column Sums
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1604 - Alert Using Same Key-Card Three or More Times in a One Hour Period
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1603 - Design Parking System
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1602 - Find Nearest Right Node in Binary Tree
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1601 - Maximum Number of Achievable Transfer Requests
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1600 - Throne Inheritance
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1599 - Maximum Profit of Operating a Centennial Wheel
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1598 - Crawler Log Folder
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1597 - Build Binary Expression Tree From Infix Expression
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1596 - The Most Frequently Ordered Products for Each Customer
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1595 - Minimum Cost to Connect Two Groups of Points
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1594 - Maximum Non Negative Product in a Matrix
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1593 - Split a String Into the Max Number of Unique Substrings
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1592 - Rearrange Spaces Between Words
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1591 - Strange Printer II
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1590 - Make Sum Divisible by P
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1589 - Maximum Sum Obtained of Any Permutation
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1588 - Sum of All Odd Length Subarrays
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1587 - Bank Account Summary II
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1586 - Binary Search Tree Iterator II
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1584 - Min Cost to Connect All Points
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1583 - Count Unhappy Friends
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1582 - Special Positions in a Binary Matrix
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1581 - Customer Who Visited but Did Not Make Any Transactions
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1580 - Put Boxes Into the Warehouse II
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1579 - Remove Max Number of Edges to Keep Graph Fully Traversable
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1578 - Minimum Time to Make Rope Colorful
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1577 - Number of Ways Where Square of Number Is Equal to Product of Two Numbers
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1576 - Replace All 's to Avoid Consecutive Repeating Characters
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1575 - Count All Possible Routes
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1574 - Shortest Subarray to be Removed to Make Array Sorted
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1573 - Number of Ways to Split a String
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1572 - Matrix Diagonal Sum
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1571 - Warehouse Manager
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1570 - Dot Product of Two Sparse Vectors
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1569 - Number of Ways to Reorder Array to Get Same BST
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1568 - Minimum Number of Days to Disconnect Island
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1567 - Maximum Length of Subarray With Positive Product
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1566 - Detect Pattern of Length M Repeated K or More Times
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1565 - Unique Orders and Customers Per Month
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1564 - Put Boxes Into the Warehouse I
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1563 - Stone Game V
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1562 - Find Latest Group of Size M
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1561 - Maximum Number of Coins You Can Get
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1560 - Most Visited Sector in a Circular Track
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1559 - Detect Cycles in 2D Grid
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1558 - Minimum Numbers of Function Calls to Make Target Array
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1557 - Minimum Number of Vertices to Reach All Nodes
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1556 - Thousand Separator
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1555 - Bank Account Summary
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1554 - Strings Differ by One Character
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1553 - Minimum Number of Days to Eat N Oranges
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1551 - Minimum Operations to Make Array Equal
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1550 - Three Consecutive Odds
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1549 - The Most Recent Orders for Each Product
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1548 - The Most Similar Path in a Graph
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1547 - Minimum Cost to Cut a Stick
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1546 - Maximum Number of Non-Overlapping Subarrays With Sum Equals Target
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1544 - Make The String Great
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1543 - Fix Product Name Format
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1542 - Find Longest Awesome Substring
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1541 - Minimum Insertions to Balance a Parentheses String
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1540 - Can Convert String in K Moves
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1539 - Kth Missing Positive Number
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1538 - Guess the Majority in a Hidden Array
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1537 - Get the Maximum Score
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1536 - Minimum Swaps to Arrange a Binary Grid
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1535 - Find the Winner of an Array Game
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1534 - Count Good Triplets
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1533 - Find the Index of the Large Integer
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1532 - The Most Recent Three Orders
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1531 - String Compression II
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1530 - Number of Good Leaf Nodes Pairs
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1529 - Minimum Suffix Flips
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1528 - Shuffle String
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1527 - Patients With a Condition
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1525 - Number of Good Ways to Split a String
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1524 - Number of Sub-arrays With Odd Sum
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1523 - Count Odd Numbers in an Interval Range
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1522 - Diameter of N-Ary Tree
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1521 - Find a Value of a Mysterious Function Closest to Target
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1520 - Maximum Number of Non-Overlapping Substrings
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1519 - Number of Nodes in the Sub-Tree With the Same Label
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1518 - Water Bottles
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1517 - Find Users With Valid E-Mails
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1516 - Move Sub-Tree of N-Ary Tree
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1515 - Best Position for a Service Centre
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1514 - Path with Maximum Probability
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1513 - Number of Substrings With Only 1s
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1512 - Number of Good Pairs
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1511 - Customer Order Frequency
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1510 - Stone Game IV
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1509 - Minimum Difference Between Largest and Smallest Value in Three Moves
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1508 - Range Sum of Sorted Subarray Sums
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1507 - Reformat Date
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1506 - Find Root of N-Ary Tree
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1505 - Minimum Possible Integer After at Most K Adjacent Swaps On Digits
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1502 - Can Make Arithmetic Progression From Sequence
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1501 - Countries You Can Safely Invest In
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1500 - Design a File Sharing System
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1498 - Number of Subsequences That Satisfy the Given Sum Condition
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1495 - Friendly Movies Streamed Last Month
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1494 - Parallel Courses II
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1491 - Average Salary Excluding the Minimum and Maximum Salary
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1490 - Clone N-ary Tree
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1485 - Clone Binary Tree With Random Pointer
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1483 - Kth Ancestor of a Tree Node
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1472 - Design Browser History
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1470 - Shuffle the Array
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1469 - Find All The Lonely Nodes
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1468 - Calculate Salaries
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1467 - Probability of a Two Boxes Having The Same Number of Distinct Balls
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1466 - Reorder Routes to Make All Paths Lead to the City Zero
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1465 - Maximum Area of a Piece of Cake After Horizontal and Vertical Cuts
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1464 - Maximum Product of Two Elements in an Array
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1463 - Cherry Pickup II
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1462 - Course Schedule IV
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1461 - Check If a String Contains All Binary Codes of Size K
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1460 - Make Two Arrays Equal by Reversing Subarrays
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1459 - Rectangles Area
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1458 - Max Dot Product of Two Subsequences
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1457 - Pseudo-Palindromic Paths in a Binary Tree
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1456 - Maximum Number of Vowels in a Substring of Given Length
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1455 - Check If a Word Occurs As a Prefix of Any Word in a Sentence
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1454 - Active Users
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1453 - Maximum Number of Darts Inside of a Circular Dartboard
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1452 - People Whose List of Favorite Companies Is Not a Subset of Another List
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1451 - Rearrange Words in a Sentence
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1450 - Number of Students Doing Homework at a Given Time
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1449 - Form Largest Integer With Digits That Add up to Target
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1448 - Count Good Nodes in Binary Tree
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1447 - Simplified Fractions
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1446 - Consecutive Characters
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1445 - Apples & Oranges
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1444 - Number of Ways of Cutting a Pizza
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1443 - Minimum Time to Collect All Apples in a Tree
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1442 - Count Triplets That Can Form Two Arrays of Equal XOR
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1441 - Build an Array With Stack Operations
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1440 - Evaluate Boolean Expression
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1439 - Find the Kth Smallest Sum of a Matrix With Sorted Rows
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1438 - Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit
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1437 - Check If All 1's Are at Least Length K Places Away
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1436 - Destination City
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1435 - Create a Session Bar Chart
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1434 - Number of Ways to Wear Different Hats to Each Other
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1433 - Check If a String Can Break Another String
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1432 - Max Difference You Can Get From Changing an Integer
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1431 - Kids With the Greatest Number of Candies
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1430 - Check If a String Is a Valid Sequence from Root to Leaves Path in a Binary Tree
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1429 - First Unique Number
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1428 - Leftmost Column with at Least a One
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1427 - Perform String Shifts
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1426 - Counting Elements
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1425 - Constrained Subsequence Sum
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1424 - Diagonal Traverse II
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1423 - Maximum Points You Can Obtain from Cards
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1422 - Maximum Score After Splitting a String
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1421 - NPV Queries
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1420 - Build Array Where You Can Find The Maximum Exactly K Comparisons
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1419 - Minimum Number of Frogs Croaking
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1418 - Display Table of Food Orders in a Restaurant
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1417 - Reformat The String
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1416 - Restore The Array
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1415 - The k-th Lexicographical String of All Happy Strings of Length n
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1414 - Find the Minimum Number of Fibonacci Numbers Whose Sum Is K
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1413 - Minimum Value to Get Positive Step by Step Sum
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1412 - Find the Quiet Students in All Exams
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1411 - Number of Ways to Paint N × 3 Grid
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1410 - HTML Entity Parser
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1409 - Queries on a Permutation With Key
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1408 - String Matching in an Array
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1407 - Top Travellers
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1406 - Stone Game III
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1405 - Longest Happy String
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1404 - Number of Steps to Reduce a Number in Binary Representation to One
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1403 - Minimum Subsequence in Non-Increasing Order
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1402 - Reducing Dishes
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1401 - Circle and Rectangle Overlapping
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1400 - Construct K Palindrome Strings
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1399 - Count Largest Group
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1398 - Customers Who Bought Products A and B but Not C
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1397 - Find All Good Strings
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1396 - Design Underground System
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1395 - Count Number of Teams
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1394 - Find Lucky Integer in an Array
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1393 - Capital GainLoss
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1392 - Longest Happy Prefix
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1391 - Check if There is a Valid Path in a Grid
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1390 - Four Divisors
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1389 - Create Target Array in the Given Order
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1388 - Pizza With 3n Slices
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1387 - Sort Integers by The Power Value
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1386 - Cinema Seat Allocation
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1385 - Find the Distance Value Between Two Arrays
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1384 - Total Sales Amount by Year
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1383 - Maximum Performance of a Team
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1382 - Balance a Binary Search Tree
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1381 - Design a Stack With Increment Operation
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1380 - Lucky Numbers in a Matrix
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1379 - Find a Corresponding Node of a Binary Tree in a Clone of That Tree
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1378 - Replace Employee ID With The Unique Identifier
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1377 - Frog Position After T Seconds
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1376 - Time Needed to Inform All Employees
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1375 - Number of Times Binary String Is Prefix-Aligned
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1374 - Generate a String With Characters That Have Odd Counts
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1373 - Maximum Sum BST in Binary Tree
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1372 - Longest ZigZag Path in a Binary Tree
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1371 - Find the Longest Substring Containing Vowels in Even Counts
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1370 - Increasing Decreasing String
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1369 - Get the Second Most Recent Activity
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1368 - Minimum Cost to Make at Least One Valid Path in a Grid
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1367 - Linked List in Binary Tree
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1366 - Rank Teams by Votes
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1365 - How Many Numbers Are Smaller Than the Current Number
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1364 - Number of Trusted Contacts of a Customer
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1363 - Largest Multiple of Three
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1362 - Closest Divisors
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1361 - Validate Binary Tree Nodes
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1360 - Number of Days Between Two Dates
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1359 - Count All Valid Pickup and Delivery Options
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1358 - Number of Substrings Containing All Three Characters
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1357 - Apply Discount Every n Orders
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1356 - Sort Integers by The Number of 1 Bits
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1355 - Activity Participants
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1354 - Construct Target Array With Multiple Sums
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1353 - Maximum Number of Events That Can Be Attended
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1352 - Product of the Last K Numbers
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1351 - Count Negative Numbers in a Sorted Matrix
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1350 - Students With Invalid Departments
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1349 - Maximum Students Taking Exam
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1348 - Tweet Counts Per Frequency
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1347 - Minimum Number of Steps to Make Two Strings Anagram
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1346 - Check If N and Its Double Exist
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1345 - Jump Game IV
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1344 - Angle Between Hands of a Clock
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1343 - Number of Sub-arrays of Size K and Average Greater than or Equal to Threshold
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1342 - Number of Steps to Reduce a Number to Zero
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1341 - Movie Rating
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1340 - Jump Game V
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1339 - Maximum Product of Splitted Binary Tree
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1338 - Reduce Array Size to The Half
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1337 - The K Weakest Rows in a Matrix
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1336 - Number of Transactions per Visit
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1335 - Minimum Difficulty of a Job Schedule
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1334 - Find the City With the Smallest Number of Neighbors at a Threshold Distance
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1333 - Filter Restaurants by Vegan-Friendly, Price and Distance
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1332 - Remove Palindromic Subsequences
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1331 - Rank Transform of an Array
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1330 - Reverse Subarray To Maximize Array Value
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1329 - Sort the Matrix Diagonally
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1328 - Break a Palindrome
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1327 - List the Products Ordered in a Period
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1326 - Minimum Number of Taps to Open to Water a Garden
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1325 - Delete Leaves With a Given Value
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1324 - Print Words Vertically
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1323 - Maximum 69 Number
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1322 - Ads Performance
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1321 - Restaurant Growth
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1320 - Minimum Distance to Type a Word Using Two Fingers
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1319 - Number of Operations to Make Network Connected
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1318 - Minimum Flips to Make a OR b Equal to c
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1317 - Convert Integer to the Sum of Two No-Zero Integers
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1316 - Distinct Echo Substrings
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1315 - Sum of Nodes with Even-Valued Grandparent
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1314 - Matrix Block Sum
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1313 - Decompress Run-Length Encoded List
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1312 - Minimum Insertion Steps to Make a String Palindrome
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1311 - Get Watched Videos by Your Friends
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1310 - XOR Queries of a Subarray
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1309 - Decrypt String from Alphabet to Integer Mapping
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1308 - Running Total for Different Genders
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1307 - Verbal Arithmetic Puzzle
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1306 - Jump Game III
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1305 - All Elements in Two Binary Search Trees
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1304 - Find N Unique Integers Sum up to Zero
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1303 - Find the Team Size
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1302 - Deepest Leaves Sum
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1301 - Number of Paths with Max Score
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1300 - Sum of Mutated Array Closest to Target
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1299 - Replace Elements with Greatest Element on Right Side
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1298 - Maximum Candies You Can Get from Boxes
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1297 - Maximum Number of Occurrences of a Substring
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1296 - Divide Array in Sets of K Consecutive Numbers
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1295 - Find Numbers with Even Number of Digits
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1294 - Weather Type in Each Country
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1293 - Shortest Path in a Grid with Obstacles Elimination
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1292 - Maximum Side Length of a Square with Sum Less than or Equal to Threshold
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1291 - Sequential Digits
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1290 - Convert Binary Number in a Linked List to Integer
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1289 - Minimum Falling Path Sum II
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1288 - Remove Covered Intervals
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1287 - Element Appearing More Than 25% In Sorted Array
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1286 - Iterator for Combination
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1285 - Find the Start and End Number of Continuous Ranges
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1284 - Minimum Number of Flips to Convert Binary Matrix to Zero Matrix
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1283 - Find the Smallest Divisor Given a Threshold
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1282 - Group the People Given the Group Size They Belong To
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1281 - Subtract the Product and Sum of Digits of an Integer
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1280 - Students and Examinations
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1279 - Traffic Light Controlled Intersection
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1278 - Palindrome Partitioning III
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1277 - Count Square Submatrices with All Ones
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1276 - Number of Burgers with No Waste of Ingredients
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1275 - Find Winner on a Tic Tac Toe Game
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1274 - Number of Ships in a Rectangle
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1273 - Delete Tree Nodes
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1272 - Remove Interval
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1271 - Hexspeak
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1270 - All People Report to the Given Manager
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1269 - Number of Ways to Stay in the Same Place After Some Steps
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1268 - Search Suggestions System
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1267 - Count Servers that Communicate
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1266 - Minimum Time Visiting All Points
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1265 - Print Immutable Linked List in Reverse
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1264 - Page Recommendations
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1263 - Minimum Moves to Move a Box to Their Target Location
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1262 - Greatest Sum Divisible by Three
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1261 - Find Elements in a Contaminated Binary Tree
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1260 - Shift 2D Grid
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1259 - Handshakes That Don't Cross
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1258 - Synonymous Sentences
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1257 - Smallest Common Region
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1256 - Encode Number
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1255 - Maximum Score Words Formed by Letters
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1254 - Number of Closed Islands
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1253 - Reconstruct a 2-Row Binary Matrix
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1251 - Average Selling Price
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1249 - Minimum Remove to Make Valid Parentheses
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1248 - Count Number of Nice Subarrays
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1247 - Minimum Swaps to Make Strings Equal
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1246 - Palindrome Removal
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1245 - Tree Diameter
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1244 - Design A Leaderboard
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1243 - Array Transformation
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1242 - Web Crawler Multithreaded
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1241 - Number of Comments per Post
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1240 - Tiling a Rectangle with the Fewest Squares
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1238 - Circular Permutation in Binary Representation
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1237 - Find Positive Integer Solution for a Given Equation
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1236 - Web Crawler
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1235 - Maximum Profit in Job Scheduling
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1234 - Replace the Substring for Balanced String
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1233 - Remove Sub-Folders from the Filesystem
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1232 - Check If It Is a Straight Line
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1231 - Divide Chocolate
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1230 - Toss Strange Coins
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1229 - Meeting Scheduler
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1228 - Missing Number In Arithmetic Progression
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1227 - Airplane Seat Assignment Probability
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1226 - The Dining Philosophers
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1225 - Report Contiguous Dates
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1224 - Maximum Equal Frequency
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1223 - Dice Roll Simulation
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1222 - Queens That Can Attack the King
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1221 - Split a String in Balanced Strings
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1220 - Count Vowels Permutation
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1219 - Path with Maximum Gold
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1218 - Longest Arithmetic Subsequence of Given Difference
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1217 - Minimum Cost to Move Chips to The Same Position
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1216 - Valid Palindrome III
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1215 - Stepping Numbers
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1214 - Two Sum BSTs
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1213 - Intersection of Three Sorted Arrays
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1212 - Team Scores in Football Tournament
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1211 - Queries Quality and Percentage
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1210 - Minimum Moves to Reach Target with Rotations
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1209 - Remove All Adjacent Duplicates in String II
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1208 - Get Equal Substrings Within Budget
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1206 - Design Skiplist
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1205 - Monthly Transactions II
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1201 - Ugly Number III
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1199 - Minimum Time to Build Blocks
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1197 - Minimum Knight Moves
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1193 - Monthly Transactions I
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1190 - Reverse Substrings Between Each Pair of Parentheses
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1189 - Maximum Number of Balloons
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1188 - Design Bounded Blocking Queue
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1174 - Immediate Food Delivery II
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1173 - Immediate Food Delivery I
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1155 - Number of Dice Rolls With Target Sum
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1154 - Day of the Year
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1153 - String Transforms Into Another String
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1152 - Analyze User Website Visit Pattern
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1150 - Check If a Number Is Majority Element in a Sorted Array
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1149 - Article Views II
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1147 - Longest Chunked Palindrome Decomposition
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1146 - Snapshot Array
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1145 - Binary Tree Coloring Game
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1144 - Decrease Elements To Make Array Zigzag
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1143 - Longest Common Subsequence
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1142 - User Activity for the Past 30 Days II
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1141 - User Activity for the Past 30 Days I
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1140 - Stone Game II
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1139 - Largest 1-Bordered Square
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1138 - Alphabet Board Path
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1137 - N-th Tribonacci Number
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1136 - Parallel Courses
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1135 - Connecting Cities With Minimum Cost
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1134 - Armstrong Number
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1133 - Largest Unique Number
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1132 - Reported Posts II
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1131 - Maximum of Absolute Value Expression
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1130 - Minimum Cost Tree From Leaf Values
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1129 - Shortest Path with Alternating Colors
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1128 - Number of Equivalent Domino Pairs
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1127 - User Purchase Platform
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1126 - Active Businesses
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1125 - Smallest Sufficient Team
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1124 - Longest Well-Performing Interval
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1123 - Lowest Common Ancestor of Deepest Leaves
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1122 - Relative Sort Array
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1121 - Divide Array Into Increasing Sequences
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1120 - Maximum Average Subtree
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1119 - Remove Vowels from a String
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1118 - Number of Days in a Month
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1117 - Building H2O
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1116 - Print Zero Even Odd
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1115 - Print FooBar Alternately
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1114 - Print in Order
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1113 - Reported Posts
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1112 - Highest Grade For Each Student
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1111 - Maximum Nesting Depth of Two Valid Parentheses Strings
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1110 - Delete Nodes And Return Forest
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1109 - Corporate Flight Bookings
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1108 - Defanging an IP Address
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1107 - New Users Daily Count
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1106 - Parsing A Boolean Expression
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1105 - Filling Bookcase Shelves
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1104 - Path In Zigzag Labelled Binary Tree
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1103 - Distribute Candies to People
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1102 - Path With Maximum Minimum Value
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1101 - The Earliest Moment When Everyone Become Friends
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1100 - Find K-Length Substrings With No Repeated Characters
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1099 - Two Sum Less Than K
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1098 - Unpopular Books
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1097 - Game Play Analysis V
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1096 - Brace Expansion II
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1095 - Find in Mountain Array
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1094 - Car Pooling
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1090 - Largest Values From Labels
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1089 - Duplicate Zeros
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1088 - Confusing Number II
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1087 - Brace Expansion
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1086 - High Five
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1082 - Sales Analysis I
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1081 - Smallest Subsequence of Distinct Characters
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1080 - Insufficient Nodes in Root to Leaf Paths
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1079 - Letter Tile Possibilities
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1078 - Occurrences After Bigram
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1077 - Project Employees III
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1076 - Project Employees II
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1075 - Project Employees I
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1070 - Product Sales Analysis III
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1069 - Product Sales Analysis II
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1068 - Product Sales Analysis I
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1067 - Digit Count in Range
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1066 - Campus Bikes II
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1065 - Index Pairs of a String
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1064 - Fixed Point
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1061 - Lexicographically Smallest Equivalent String
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1060 - Missing Element in Sorted Array
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1059 - All Paths from Source Lead to Destination
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1058 - Minimize Rounding Error to Meet Target
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1057 - Campus Bikes
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1056 - Confusing Number
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1054 - Distant Barcodes
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1053 - Previous Permutation With One Swap
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1052 - Grumpy Bookstore Owner
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1050 - Actors and Directors Who Cooperated At Least Three Times
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1047 - Remove All Adjacent Duplicates In String
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1045 - Customers Who Bought All Products
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1042 - Flower Planting With No Adjacent
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1041 - Robot Bounded In Circle
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1040 - Moving Stones Until Consecutive II
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1039 - Minimum Score Triangulation of Polygon
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1038 - Binary Search Tree to Greater Sum Tree
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1036 - Escape a Large Maze
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1035 - Uncrossed Lines
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1034 - Coloring A Border
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1033 - Moving Stones Until Consecutive
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1032 - Stream of Characters
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1030 - Matrix Cells in Distance Order
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1029 - Two City Scheduling
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1028 - Recover a Tree From Preorder Traversal
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1027 - Longest Arithmetic Subsequence
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1026 - Maximum Difference Between Node and Ancestor
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1021 - Remove Outermost Parentheses
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1017 - Convert to Base -2
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1016 - Binary String With Substrings Representing 1 To N
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1010 - Pairs of Songs With Total Durations Divisible by 60
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1009 - Complement of Base 10 Integer
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1008 - Construct Binary Search Tree from Preorder Traversal
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1007 - Minimum Domino Rotations For Equal Row
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1006 - Clumsy Factorial
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1004 - Max Consecutive Ones III
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1002 - Find Common Characters
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998 - Maximum Binary Tree II
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997 - Find the Town Judge
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980 - Unique Paths III
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972 - Equal Rational Numbers
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971 - Flip Binary Tree To Match Preorder Traversal
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970 - Powerful Integers
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969 - Pancake Sorting
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968 - Binary Tree Cameras
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960 - Delete Columns to Make Sorted III
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959 - Regions Cut By Slashes
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950 - Reveal Cards In Increasing Order
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920 - Number of Music Playlists
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891 - Sum of Subsequence Widths
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889 - Construct Binary Tree from Preorder and Postorder Traversal
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117 - Populating Next Right Pointers in Each Node II
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116 - Populating Next Right Pointers in Each Node
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115 - Distinct Subsequences
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114 - Flatten Binary Tree to Linked List
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113 - Path Sum II
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112 - Path Sum
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111 - Minimum Depth of Binary Tree
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110 - Balanced Binary Tree
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109 - Convert Sorted List to Binary Search Tree
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108 - Convert Sorted Array to Binary Search Tree
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107 - Binary Tree Level Order Traversal II
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106 - Construct Binary Tree from Inorder and Postorder Traversal
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105 - Construct Binary Tree from Preorder and Inorder Traversal
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104 - Maximum Depth of Binary Tree
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103 - Binary Tree Zigzag Level Order Traversal
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102 - Binary Tree Level Order Traversal
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101 - Symmetric Tree
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100 - Same Tree
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99 - Recover Binary Search Tree
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98 - Validate Binary Search Tree
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97 - Interleaving String
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96 - Unique Binary Search Trees
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95 - Unique Binary Search Trees II
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94 - Binary Tree Inorder Traversal
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93 - Restore IP Addresses
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92 - Reverse Linked List II
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91 - Decode Ways
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90 - Subsets II
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89 - Gray Code
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88 - Merge Sorted Array
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87 - Scramble String
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86 - Partition List
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85 - Maximal Rectangle
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84 - Largest Rectangle in Histogram
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83 - Remove Duplicates from Sorted List
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82 - Remove Duplicates from Sorted List II
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81 - Search in Rotated Sorted Array II
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80 - Remove Duplicates from Sorted Array II
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79 - Word Search
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78 - Subsets
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77 - Combinations
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76 - Minimum Window Substring
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75 - Sort Colors
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74 - Search a 2D Matrix
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73 - Set Matrix Zeroes
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72 - Edit Distance
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71 - Simplify Path
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70 - Climbing Stairs
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69 - Sqrt(x)
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68 - Text Justification
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67 - Add Binary
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66 - Plus One
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65 - Valid Number
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64 - Minimum Path Sum
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63 - Unique Paths II
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62 - Unique Paths
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61 - Rotate List
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60 - Permutation Sequence
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59 - Spiral Matrix II
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58 - Length of Last Word
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57 - Insert Interval
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56 - Merge Intervals
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55 - Jump Game
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54 - Spiral Matrix
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53 - Maximum Subarray
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52 - N-Queens II
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51 - N-Queens
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50 - Pow(x, n)
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49 - Group Anagrams
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48 - Rotate Image
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47 - Permutations II
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46 - Permutations
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45 - Jump Game II
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44 - Wildcard Matching
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43 - Multiply Strings
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42 - Trapping Rain Water
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41 - First Missing Positive
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40 - Combination Sum II
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39 - Combination Sum
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38 - Count and Say
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37 - Sudoku Solver
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36 - Valid Sudoku
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35 - Search Insert Position
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34 - Find First and Last Position of Element in Sorted Array
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33 - Search in Rotated Sorted Array
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32 - Longest Valid Parentheses
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31 - Next Permutation
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30 - Substring with Concatenation of All Words
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29 - Divide Two Integers
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28 - Find the Index of the First Occurrence in a String
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27 - Remove Element
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26 - Remove Duplicates from Sorted Array
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25 - Reverse Nodes in k-Group
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24 - Swap Nodes in Pairs
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23 - Merge k Sorted Lists
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22 - Generate Parentheses
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21 - Merge Two Sorted Lists
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20 - Valid Parentheses
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19 - Remove Nth Node From End of List
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18 - 4Sum
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17 - Letter Combinations of a Phone Number
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16 - 3Sum Closest
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15 - 3Sum
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14 - Longest Common Prefix
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13 - Roman to Integer
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12 - Integer to Roman
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11 - Container With Most Water
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10 - Regular Expression Matching
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9 - Palindrome Number
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8 - String to Integer (atoi)
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7 - Reverse Integer
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6 - Zigzag Conversion
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5 - Longest Palindromic Substring
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4 - Median of Two Sorted Arrays
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3 - Longest Substring Without Repeating Characters
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2 - Add Two Numbers
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1 - Two Sum
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Software Engineer Behavioral Interview Questions
Reference
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Tech Stack Knowledge Based
Docker related questions
Docker related article 1
Docker related article 2
Docker related article 3
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Python Inteview Questions
Reference
https://github.com/kenwoodjw/python_interview_question/blob/master/README_EN.md
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Software Engineer System Design Inteview Questions
Goal - Design xxx-system
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My Notes
Common Leetcode solution templates
Template - Backtracking
ans = []
def dfs(start_index, path, [...additional states]):
if is_leaf(start_index):
ans.append(path[:]) # add a copy of the path to the result
return
for edge in get_edges(start_index, [...additional states]):
# prune if needed
if not is_valid(edge):
continue
path.add(edge)
if additional states:
update(...additional states)
dfs(start_index + len(edge), path, [...additional states])
# revert(...additional states) if necessary e.g. permutations
path.pop()
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