#include<iostream>

int main(){
	int n;
  cin>>n;
  int x = n%10;
  if(x == 2 || x == 4 || x == 5 || x == 7 || x == 9) cout<<"hon"<<endl;
  else if(x == 0 || x == 1 || x == 6 || x == 8) cput<<"pon"<<endl;
  else cout<<"bon"<<endl;
}