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