#include <bits/stdc++.h>
using namespace std;
int arr[55];
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  cout.tie(NULL);
  int z;
  cin >> z;
  int a, s = 0, cnt = 1;
  bool cek = true;
  for (int q = 1; q <= z; q++) {
    cin >> arr[q];
  }
  sort(arr + 1, arr + 1 + z);
  s = arr[1];
  for (int q = 2; q <= z; q++)
    if (arr[q] == s) cnt++;
  if (cnt > z / 2) cek = false;
  if (cek) {
    cout << "Alice" << endl;
  } else
    cout << "Bob" << endl;
}
