#include <bits/stdc++.h>
using namespace std;
int A[56], n, minn = 0x7f7f7f7f, sum;
int main() {
  cin >> n;
  for (int i = 0; i < n; ++i) {
    cin >> A[i];
    if (A[i] < minn)
      minn = A[i], sum = 1;
    else if (A[i] == minn)
      ++sum;
  }
  puts(sum > n / 2 ? "Bob" : "Alice");
}
