#include<bits/stdc++.h>
using namespace std;
int main(){
  int a;
  cin>>a;
  switch(a%10){
      case 3;
      cout<<"bon"<<endl;
      break;
      case 0;
      case 1;
      case 6;
      case 8;
      cout<<"pon"<<endl;
      break;
      case 2;
      case 4;
      case 5;
      case 7;
      case 9;
      cout<<"hon"<<endl;
      break;
  }