#include <bits/stdc++.h>
using namespace std;
int main() {
  string n;
  cin >> n;
  if (n[n.length() - 1] == '3') {
    cout << "bon" << endl;
  } else if (n[n.length() - 1] == ('0' || '1' || '6' || '8')) {
    cout << "pon" << endl;
  } else {
    cout << "hon" << endl;
  }
  return 0;
}
