#include<iostream>

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