#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  string m;
  m = std::to_string(n);
  if (m.at(m.size() - 1) == 2 || m.at(m.size() - 1) == 4 ||
      m.at(m.size() - 1) == 5 || m.at(m.size() - 1) == 7 ||
      m.at(m.size() - 1) == 9) {
    cout << "hon" << endl;
  } else if (m.at(m.size() - 1) == 0 || m.at(m.size() - 1) == 1 ||
             m.at(m.size() - 1) == 6 || m.at(m.size() - 1) == 8) {
    cout << "pon" << endl;
  } else if (m.at(m.size() - 1) == 3) {
    cout << "bon" << endl;
  }
}
