#include <bits/stdc++.h>
using namespace std;
void solve() {
  long long n;
  cin >> n;
  vector<long long> a(n);
  for (long long i = 0; i < n; ++i) cin >> a[i];
  sort(a.begin(), a.end());
  long long l = 0;
  for (long long i = 0; i < n; ++i) {
    if (a[i] == a[0])
      ++l;
    else
      break;
  }
  if (l <= n / 2)
    cout << "Alice";
  else
    cout << "Bob";
}
signed main() {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  solve();
  return 0;
}
