题解 | #牛牛的素数和#
牛牛的素数和
https://www.nowcoder.com/practice/d748d79f68ab443482c5547d93824f50
#include <stdio.h>
#include <math.h>
int main()
{
int n, m;
scanf("%d%d", &n, &m);
int sum = 0;
for (int i = n; i < m + 1; i++)
{
int flag = 1;
for (int j = 2; j <= (int)sqrt(i); j++)
{
if (i % j == 0)
{
flag = 0;
break;
}
}
if (flag)
sum += i;
}
printf("%d", sum);
return 0;
}
