#include <bits/stdc++.h>
using namespace std;
int a[51];
int n;
int main() {
  scanf("%d", &n);
  set<int> s;
  for (int i = 0; i < n; i++) {
    scanf("%d", &a[i]);
  }
  sort(a, a + n);
  int cnt = 0;
  for (int i = 0; i < n; i++) {
    if (a[i] == a[0]) cnt++;
  }
  if (cnt > n / 2)
    cout << "Bob" << endl;
  else {
    cout << "Alice" << endl;
  }
}
