#include <bits/stdc++.h>
using namespace std;
int main() {
  iostream::sync_with_stdio(false), cin.tie(nullptr);
  int n;
  cin >> n;
  map<int, int> piles;
  for (int i = 0; i < n; i++) {
    int x;
    cin >> x;
    piles[x]++;
  }
  if (piles.begin()->second > n / 2) {
    cout << "Bob";
  } else {
    cout << "Alice";
  }
}
