#include <bits/stdc++.h>
using namespace std;
int freq[51];
int main() {
  int n;
  while (scanf("%d", &n) > 0) {
    for (int i = 1; i <= n; i++) freq[i] = 0;
    int min_a = 51;
    for (int i = 0; i < n; i++) {
      int a;
      scanf("%d", &a);
      freq[a]++;
      min_a = min(min_a, a);
    }
    printf("%s\n", freq[min_a] <= n / 2 ? "Alice" : "Bob");
  }
}
