#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  int a[n];
  for (int i = 0; i < n; i++) cin >> a[i];
  sort(a, a + n);
  if (a[0] == a[n / 2] == 1) {
    cout << "Bob\n";
  } else
    cout << "Alice\n";
}
