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