#include <bits/stdc++.h>
using namespace std;
int main() {
  int N;
  cin >> N;
  vector<int> number;
  while (N > 0) {
    number.push_back(N % 10);
    N /= 10;
  }
  switch (number[0]) {
    case 2:
    case 4:
    case 5:
    case 7:
    case 9:
      cout << "hon"
           << "\n";
      break;
    case 0:
    case 1:
    case 6:
    case 8:
      cout << "pon"
           << "\n";
      break;
    case 3:
      cout << "bon"
           << "\n";
      break;
    default:
      break;
  }
}
