#include<bits/stdc++.h>
using namespace std;
int main(){
  int n;cin>>n;n=n%10;
  if(n==2 or n==4 or n==5 or n==7 or n==9)cout<<"hon"<<endl;
  else if(n==3)cout<<"bon"<<endl;
  else cout<<"pon"<<endl;
}