#include<iostream>
using namespace std;

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