#include <iostream>
using namespace std;

int main(){
  string N;
  char c;
  cin >> N;
  int size;
  size = N.size();
  
  c = N[size];
    
  switch(c){
    case "2";
    case "4";
    case "5";
    case "7";
    case "9";
      cout << "hon" << endl;
      break;
    case "0";
    case "1";
    case "6";
    case "8";
      cout << "pon" << endl;
      break;
    case "3";
      cout << "bon" << endl;
      break;
  }  
}  