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