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