#include <bits/stdc++.h>
using namespace std;
void debug_out() { cerr << endl; }
template <typename Head, typename... Tail>
void debug_out(Head H, Tail... T) {
  cerr << H << " ";
  debug_out(T...);
}
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(nullptr);
  int n;
  cin >> n;
  switch (n) {
    case 2:
    case 4:
    case 5:
    case 7:
    case 9:
      cout << "hon" << endl;
      break;
    case 0:
    case 1:
    case 6:
    case 8:
      cout << "pon" << endl;
      break;
    case 3:
      cout << "bon" << endl;
      break;
  }
  return 0;
}
