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

# 1716. Calculate Money in Leetcode Bank

## Level

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;
}
}
return total;
}
}
```