#include <bits/stdc++.h>
using namespace std;

int main() {
  int n;
  cin >> n;
  if(n%10=3)cout << "bon "<<endl;
  else if(n%10=0||n%10=1||n%10=6||n%10=8)cout << "pon" <<endl;
  else cout <<"hon"<<endl;
  
  
  
}
