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

int main(){
	int N;
  cin >> N;
  n %= 1000;
	if(N == 2 || N == 4 || N ==5 || N ==7 || N == 9){
      cout << "hon" << endl;
    }else if(N == 0 || N == 1 || N == 6 || N == 8){
      cout << "pon" << endl;
    }else{
      cout << "bon" << endl;
return 0;
}