题解 | #牛牛的素数和#

#include <stdio.h>

int main() 
{
    int l, r , sum = 0;
    while(scanf("%d %d",&l ,&r) != EOF)
    {
        int i, j, tmp = 1;
        for(i = l; i <= r; i++)
        {
            if(l == 2)
                sum += 2;
            else if(i % 2 != 0 && i % 3 != 0 && i % 5 != 0 && i % 7 != 0)
                sum += i;
        }
        printf("%d",sum);
    }
    return 0;
}