【1354】素数判定

#include <stdio.h>
#include <stdlib.h>int main()
{int n,i;int isprime=1;scanf("%d",&n);if(n==1){isprime=0;}for(i=2; i<n; i++){if(n%i==0){isprime=0;break;}}if(isprime==0){printf("No");}else{printf("Yes");}return 0;
}