#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, s = 0;
  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";
}
