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