#include <bits/stdc++.h>
using namespace std;
const int MAX = 1e6 + 10;
const long long inf = 9;
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  long long tc, n;
  cin >> n;
  if (n % 10 == 3)
    cout << "bon\n";
  else if (n % 10 == 0 || n % 10 == 1 || n % 10 == 6 || n % 10 == 8)
    cout << "hon\n";
  else
    cout << "pon\n";
}
