题解 | #牛牛学数列4#
牛牛学数列4
https://ac.nowcoder.com/acm/problem/22159
#include <stdio.h>
#include <math.h>
int main()
{
int n,i,j;
int f=0;
int t=0;
scanf("%d",&n);
for(j=1;j<=n;j++)
{
for(i=1;i<=j;i++)
{
f+=i;
}
t+=f;
}
printf("%d",f);
return 0;
}
