#include <bits/stdc++.h>
using namespace std;

int main(){
int a;
  cin>>a;
  while(a>10){
    a = a%10;
  }
  if(a==2 || a=-4 || a==5 || a==7 || a==9){
    cout<<"hon"<<endl;
  else if(a==0 || a==1 || a==6 || a==8){
    cout<<"pon"<<endl;}
  else
    cout<<"bon"<<endl;
  }