#include <bits/stdc++.h>
using namespace std;
int main() {
  int N;
  cin >> N;
  int n = N % 10;
  if (n == 2 || n == 4 || n == 7 || n == 9)
    cout << "hon" << endl;
  else if (n == 3)
    cout << "bon" << endl;
  else
    cout << "pon" << endl;
}
