#include <bits/stdc++.h>
using namespace std;
long long int n, t = 1, tmp;
int main() {
  cin >> n;
  n = n % 10;
  if (n == 2 || n == 4 || n == 5 || n == 7 || n == 9) cout << "hon";
  if (n == 0 || n == 1 || n == 6 || n == 8) cout << "pon";
  if (n == 3) cout << "bon";
}
