#include<bits/stdc++.h>
using namespace std;
int main()
{
  int n;
  cin>>n;
  n=n%10;
  if(n==3)
    cout<<"bon"<<endl;
  else if(n==1||n==6||n==8||n==0)
    cout<<"pon"<<endl;
  else
    cout<<"hon"<<endl;
}