Leetcode 1716. 计算力扣银行的钱（DAY 115) ---- 贪心算法学习期

原题题目

代码实现（首刷自解）

class Solution {
    
public:int totalMoney(int n) {
    int count = 0,ret = 0,start = 1;int pre = 21;while(count < n){
    int temp = (n-count <= 7 ? n-count : 7);count += temp;if(temp == 7){
    ret += (pre+7);pre += 7;}else    ret += (start + (start+temp-1))*temp/2;++start;}return ret;}
};