#include <bits/stdc++.h>
using namespace std;
int main(void) {
  int n;
  cin >> n;
  while (n > 9) {
    n = n / 10;
  }
  if (n == 3)
    cout << "bon" << endl;
  else if (n == 0 || n == 1 || n == 6 || n == 8) {
    cout << "pon" << endl;
  } else {
    cout << "hon" << endl;
  }
  return 0;
}
