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