#include <bits/stdc++.h>
using namespace std;
int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  int n;
  cin >> n;
  int A[n];
  for (int i = 0; i < n; i++) cin >> 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) cnt = 0;
  if (!cnt)
    cout << "Alice";
  else
    cout << "Bob";
}
