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