#include <iostream>
using namespace std;
int main() {
  int n;
  cin >> n;
  if(n%10 == 3) cout << "bon";
  else if(n%10 == 0 || n%10 == 1 || n%10 == 6 || n%10 == 8 ) cout << "pon";
  else cout << "hon";
}