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