#include<iostream>
using namespace std;
int main(){
  int n;
  cin >> n;
  if(n % 10 == 3){
    cout << 'bon\n';
  }else if((n % 10 == 0) || (n % 10 == 1) || ( n % 10 == 6) || (n % 10 == 8)){
    cout << 'pon\n';
  }else{
    cout << 'hon\n';
  }
  return 0;
}