#include <bits/stdc++.h>
using namespace std;
class ATherefore {
 public:
  void solve(std::istream& cin, std::ostream& cout) {
    int n;
    cin >> n;
    if (n % 10 == 3) {
      cout << "bon" << endl;
    } else if (n % 10 == 0 || n % 10 == 1 || n % 10 == 6 || n % 10 == 7) {
      cout << "pon" << endl;
    } else {
      cout << "hon" << endl;
    }
  }
};
int main() {
  ATherefore solver;
  std::istream& in(std::cin);
  std::ostream& out(std::cout);
  solver.solve(in, out);
  return 0;
}
