#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  n %= 100;
  n %= 10;
  if (n == '3')
    cout << "bon" << endl;
  else if (n == '0' || n == '1' || n == '6' || n == '8')
    cout << "pon" << endl;
  else
    cout << "hon" << endl;
}
