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