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


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

  else
    cout << "hon" <<endl;
}