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

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