0秒题解

#include<cstdio>
int main(){
int n;
scanf("%d",&n);
if(n%30&&n%50&&n%70)printf("3 5 7");
if(n%3!=0&&n%50&&n%70)printf("5 7");
if(n%30&&n%50&&n%7!=0)printf("3 5");
if(n%30&&n%5!=0&&n%70)printf("3 7");
if(n%30&&n%5!=0&&n%7!=0)printf("3");
if(n%3!=0&&n%50&&n%7!=0)printf("5");
if(n%3!=0&&n%5!=0&&n%70)printf("7");
if(n%3!=0&&n%5!=0&&n%7!=0)printf("n");
return 0;
}