#include <bits/stdc++.h>
using namespace std;
int main() {
	int n; cin >> n;
  	n = n % 10;
  	if (n == 3) cout << "bon";
  	else if (n == 0 || n == 1 || n == 6 || n == 8) cout << "pon";
  	else cout << "hon";
}