#include <bits/stdc++.h>
using namespace std;
int a[100], n, m, x, h, ans, l, r;
int main() {
  cin >> n;
  for (int i = 0; i < n; i++) {
    cin >> x;
    a[x]++;
  }
  for (int i = 1; i <= 50; i++) {
    if (a[i] == 0) continue;
    if (a[i] > n / 2) {
      cout << "Bob";
      return 0;
    }
    break;
  }
  cout << "Alice";
  return 0;
}
