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

int main(){
	string n;
  	cin >> n;
  	int a = n.size();
  	if((n.at(a)=="0")||(n.at(a)=="1")||(n.at(a)=="6")||(n.at(a)=="8")) cout << "pon" << endl;
  	if(n.at(a) == "3") cout << "bon" << endl;
  	else cout << "hon" << endl;
}