#include <bits/stdc++.h>
using namespace std;
const int N = 55;
int n, a[N], cnt[N];
int main() {
  ios::sync_with_stdio(false), cin.tie(0);
  cin >> n;
  for (int i = 0; i < n; i++) {
    cin >> a[i];
    cnt[a[i]]++;
  }
  if (cnt[*min_element(a, a + n)] > n / 2)
    cout << "Bob";
  else
    cout << "Alice";
  return 0;
}
