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