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