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