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g1701_1800.s1716_calculate_money_in_leetcode_bank.readme.md Maven / Gradle / Ivy

1716\. Calculate Money in Leetcode Bank

Easy

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_ nth _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`