#include <bits/stdc++.h>
using namespace std;
const size_t M = 1e9 + 7;
int main() {
  int n;
  cin >> n;
  vector<int> cnt(51);
  for (int i = 0; i < n; i++) {
    int x;
    cin >> x;
    cnt[x]++;
  }
  int m = 0;
  for (int i = 1; i <= 50; i++) {
    if (cnt[i]) {
      m = i;
      break;
    }
  }
  if (cnt[m] <= n / 2) {
    cout << "Alice\n";
  } else {
    cout << "Bob\n";
  }
  return 0;
}
