Formatted question description: https://leetcode.ca/all/1716.html

# 1716. Calculate Money in Leetcode Bank

Easy

## Description

Hercy wants to save money for his first car. He puts money in the Leetcode bank every day.

He starts by putting in $1 on Monday, the first day. Every day from Tuesday to Sunday, he will put in $1 more than the day before. On every subsequent Monday, he will put in $1 more than the previous Monday. Given n, return the total amount of money he will have in the Leetcode bank at the end of the n-th day. Example 1: Input: n = 4 Output: 10 Explanation: After the 4th day, the total is 1 + 2 + 3 + 4 = 10. Example 2: Input: n = 10 Output: 37 Explanation: After the 10th day, the total is (1 + 2 + 3 + 4 + 5 + 6 + 7) + (2 + 3 + 4) = 37. Notice that on the 2nd Monday, Hercy only puts in$2.

Example 3:

Input: n = 20

Output: 96

Explanation: After the 20th day, the total is (1 + 2 + 3 + 4 + 5 + 6 + 7) + (2 + 3 + 4 + 5 + 6 + 7 + 8) + (3 + 4 + 5 + 6 + 7 + 8) = 96.

Constraints:

• 1 <= n <= 1000

## Solution

Loop over n days. For each day, obtain the amount of money put in the Leetcode bank, and calculate the total amount of money accordingly.

class Solution {
public int totalMoney(int n) {
int total = 0;
int start = 0;
int curr = 0;
for (int i = 1; i <= n; i++) {
if (i % 7 == 1) {
start++;
total += start;
curr = start;
} else {
curr++;
total += curr;
}
}