#include <bits/stdc++.h>
using namespace std;
const int N = 1e5 + 1000, mod = 1e9 + 7, inf = 1e9 + 7;
int n, a[N];
int was[N];
int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  cin >> n;
  for (int i = 1; i <= n; i++) {
    cin >> a[i];
    was[a[i]]++;
  }
  if (was[1] <= n / 2 && was[1] > 0) {
    cout << "Alice";
    return 0;
  }
  bool ok = false;
  for (int i = 1; i <= 50; i++) {
    if (was[i] > n / 2 && !ok) {
      cout << "Bob";
      return 0;
    }
    if (was[i]) ok = true;
  }
  cout << "Alice";
  return 0;
}
