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 thenthday.
Input: n = 4 Output: 10 Explanation: After the 4th day, the total is 1 + 2 + 3 + 4 = 10.
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.
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.
1 <= n <= 1000
# @param {Integer} n# @return {Integer}deftotal_money(n)x=n / 7y=n % 728 * x + x * (x - 1) * 7 / 2 + (x + 1) * y + y * (y - 1) / 2endimplSolution{pubfntotal_money(n:i32) -> i32{let x = n / 7;let y = n % 7;28* x + x *(x - 1)*7 / 2 + (x + 1)* y + y *(y - 1) / 2}}