#include <bits/stdc++.h>
using namespace std;
int main() {
  int N;
  cin >> N;
  int min_stones = 51, cnt_min = 0;
  for (int a, i = 0; i < N; ++i) {
    cin >> a;
    if (a == min_stones)
      ++cnt_min;
    else if (a < min_stones)
      min_stones = a, cnt_min = 1;
  }
  cout << (cnt_min <= N / 2 ? "Alice" : "Bob") << '\n';
}
