#include <bits/stdc++.h>
using namespace std;
int n, a[100005], num[100005];
int main() {
  scanf("%d", &n);
  for (register int i = 1; i <= n; ++i) scanf("%d", &a[i]), num[a[i]]++;
  for (register int i = 1; i <= 50; ++i)
    if (num[i]) {
      if (num[i] > n / 2)
        printf("Bob\n");
      else
        printf("Alice\n");
      break;
    }
  return 0;
}
