#include <iostream>
#include <bits/stdc++.h>

using namespace std;

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