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