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