题解

#include<bits/stdc++.h>
using namespace std;
int main()
{
	int n;
	cin>>n;
	if(n%3==0) cout<<"3 ";
	if(n%5==0) cout<<"5 ";
	if(n%7==0) cout<<"7";
	if(n%3!=0&&n%5!=0&&n%7!=0)
	{
		cout<<"n";
	}
	return 0;
}