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