#include <bits/stdc++.h>

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