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