#include <bits/stdc++.h>
using namespace std;
int main() {
  int N;
  cin >> N;
  int nn = N % 10;
  if (nn == 2 || nn == 4 || nn == 7 || nn == 5 || nn == 7)
    cout << "hon" << endl;
  else if (nn == 3)
    cout << "bon";
  else
    cout << "pon";
  return 0;
}
