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