#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  int x = n & 10;
  if (x == 2 || x == 4 || x == 5 || x == 7 || x == 9) cout << "hon" << endl;
  if (x == 0 || x == 1 || x == 6 || x == 8) cout << "pon" << endl;
  if (x == 3) cout << "bon" << endl;
}
