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