tijie

#include<iostream>
using namespace std;
int main()
{
int n;
cin>>n;
if(n%30)
cout<<"3"<<" ";
if(n%50)
cout<<"5"<<" ";
if(n%7==0)
cout<<"7"<<" ";
if(n%3!=0&&n%5!=0&&n%7!=0)
cout<<"n";
return 0;
}