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