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