#include <bits/stdc++.h>
using namespace std;
 
int main() {
  string n;
  cin >> n;
  int s = n % 10
  
  
  
  if(s == "2" || s =="4" || s =="5" || s =="7" || s =="9"){
    cout << "hon" << endl;
  }
  else if(s == "0" || s =="1" || s =="6" || s =="8"){
    cout << "pon" << endl;
  }
  else if(s == "3"){
    cout << "bon" << endl;
  }
  
  
  
}