PLEASE LOOK AT IT

#include<iostream>
using namespace std;

int main(){

int n;
cin>>n;
bool th=n%3==0,fi=n%5==0,se=n%7==0;
if(!(th||fi||se))cout<<"n";
if(th)cout<<"3"<<" ";
if(fi)cout<<"5"<<" ";
if(se)cout<<"7";
return 0;

}