#include <bits/stdc++.h>
using namespace std;
int main() {
  long long int n;
  cin >> n;
  vector<long long int> v(n);
  for (long long int i = 0; i <= n - 1; i++) cin >> v[i];
  sort((v).begin(), (v).end());
  long long int cnt = 0, i = 0;
  while (v[i] == v[0]) i++, cnt++;
  if (cnt > 0 && cnt <= n / 2)
    cout << "Alice"
         << "\n";
  else
    cout << "Bob"
         << "\n";
}
