#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, s;
  cin >> n;
  s = n % 10;
  if (s == 0 || s == 1 || s == 6 || s == 8) cout << "pon";
  if (s == 2 || s == 4 || s == 5 || s == 7 || s == 9)
    cout << "hon";
  else
    cout << "bon";
}
