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