#include <bits/stdc++.h>
using namespace std;
int n, a[55], b[55];
int main() {
  scanf("%d", &n);
  memset(b, 0, sizeof(b));
  for (int i = 1; i <= n; ++i) scanf("%d", &a[i]), b[a[i]]++;
  sort(a + 1, a + 1 + n);
  if (b[a[1]] <= n / 2)
    printf("Alice\n");
  else
    printf("Bob\n");
  return 0;
}
