#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, minn = 55, cnt = 0;
  cin >> n;
  for (int i = 1; i <= n; i++) {
    int t;
    cin >> t;
    if (t < minn) {
      minn = t;
      cnt = 1;
    } else if (t == minn)
      cnt++;
  }
  if (cnt <= n / 2)
    cout << "Alice\n";
  else
    cout << "Bob\n";
}
