#include<bits/stdc++.h>
using namespace std;
int main(){
  int n;
  cin>>n;
  int temp =0;
  temp = n/10;
  if(n==2|| 4||5|| 7|| || 9)
    cout<<"hon";
  else if(n==0||1||6 ||8)
    cout<<"pon";
  else
    cout<<"bon";
}