#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  vector<int> a(n);
  for (int &t : a) cin >> t;
  sort(begin(a), end(a));
  int c = 0;
  for (int t : a) c += (t == a[0]);
  puts(c > n / 2 ? "Bob" : "Alice");
}
