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