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

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