public static int cookies(int k, List<Integer> A) {
        // Write your code here
        PriorityQueue <Integer> pq = new PriorityQueue<>(A);        
        int count = 0;
        while (pq.size() > 1 && pq.peek()<k) {
            pq.offer(pq.poll() + 2 * pq.poll());
            count++;
        }
        return  pq.peek() >= k ? count : -1;
    }