#include <bits/stdc++.h>
using namespace std;
int cnt[55];
int main() {
  int n;
  cin >> n;
  int x;
  int mn = 123;
  for (int i = 0; i < n; i++) {
    cin >> x;
    cnt[x]++;
    mn = min(mn, x);
  }
  if (cnt[mn] > n / 2) {
    cout << "Bob\n";
  } else
    cout << "Alice\n";
  return 0;
}
