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