#include <bits/stdc++.h>
using namespace std;
const int INF = 0x3f3f3f3f;
int a[55];
int main() {
  int n;
  cin >> n;
  for (int i = 1; i <= n; ++i) cin >> a[i];
  int win = 1;
  for (int i = 1; i <= 50; ++i) {
    int cnt = 0;
    for (int j = 1; j <= n; ++j)
      if (a[j] == i) cnt++;
    if (cnt) {
      if (cnt > n / 2) {
        win ^= 1;
      }
      if (win == 1) {
        cout << "Alice";
        return 0;
      } else {
        cout << "Bob";
        return 0;
      }
    }
  }
  return 0;
}
