题解 | #牛牛学数列4#
牛牛学数列4
http://www.nowcoder.com/practice/586b114f52034688879342ba45779081
#include<stdio.h> int main() { int n; int sum=0; int sum1=0; scanf("%d",&n); for(int i=1;i<=n;i++) { sum=sum+i; sum1+=sum; } printf("%d",sum1); return 0; }
牛牛学数列4
http://www.nowcoder.com/practice/586b114f52034688879342ba45779081
#include<stdio.h> int main() { int n; int sum=0; int sum1=0; scanf("%d",&n); for(int i=1;i<=n;i++) { sum=sum+i; sum1+=sum; } printf("%d",sum1); return 0; }
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