#include <bits/stdc++.h>
using namespace std;
signed main() {
  long long int n;
  cin >> n;
  long long int k = n % 10;
  if (k == 2 || k == 4 || k == 5 || k == 7 || k == 9)
    cout << "hon" << endl;
  else if (k = 3)
    cout << "bon" << endl;
  else
    cout << "pon" << endl;
}
