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