题解 | #牛牛学数列4#
牛牛学数列4
https://www.nowcoder.com/practice/586b114f52034688879342ba45779081
#include <stdio.h> int main() { int n = 0; int sum = 0; int s = 0; scanf("%d",&n); for (int i = 1; i <= n; i++) { sum += i; s= s+ sum; } printf("%d\n",s); return 0; }