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64 lines
1.8 KiB
Markdown
64 lines
1.8 KiB
Markdown
# [1716. Calculate Money in Leetcode Bank](https://leetcode.com/problems/calculate-money-in-leetcode-bank/)
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## 题目
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Hercy wants to save money for his first car. He puts money in the Leetcode bank **every day**.
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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**.
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Given `n`, return *the total amount of money he will have in the Leetcode bank at the end of the* `nth` *day.*
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**Example 1:**
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```
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Input: n = 4
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Output: 10
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Explanation: After the 4th day, the total is 1 + 2 + 3 + 4 = 10.
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```
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**Example 2:**
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```
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Input: n = 10
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Output: 37
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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.
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```
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**Example 3:**
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```
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Input: n = 20
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Output: 96
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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.
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```
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**Constraints:**
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- `1 <= n <= 1000`
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## 题目大意
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Hercy 想要为购买第一辆车存钱。他 每天 都往力扣银行里存钱。最开始，他在周一的时候存入 1 块钱。从周二到周日，他每天都比前一天多存入 1 块钱。在接下来每一个周一，他都会比 前一个周一 多存入 1 块钱。给你 n ，请你返回在第 n 天结束的时候他在力扣银行总共存了多少块钱。
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## 解题思路
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- 简单题。按照题意写 2 层循环即可。
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## 代码
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```go
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package leetcode
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func totalMoney(n int) int {
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res := 0
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for tmp, count := 1, 7; n > 0; tmp, count = tmp+1, 7 {
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for m := tmp; n > 0 && count > 0; m++ {
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res += m
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n--
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count--
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}
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}
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return res
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}
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``` |