题解 | #幸运数字7#
幸运数字7
https://ac.nowcoder.com/acm/problem/22162
#include <stdio.h>
#include <math.h>
int main()
{
int n,i;
int sum=0;
scanf("%d",&n);
for(i=1;i<=n;i++)
{
if (i%7==0)
sum+=i;
}
printf("%d",sum);
return 0;
}
