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