public static int cookies(int k, List<Integer> A) {
        PriorityQueue<Integer> pq = new PriorityQueue<>(A);
        int operations = 0;

        while (pq.size() > 1 && pq.peek() < k) {
            int first = pq.poll();
            int second = pq.poll();
            int combinedSweetness = first + (2 * second);
            pq.offer(combinedSweetness);
            operations++;
        }

        return pq.peek() >= k ? operations : -1;
    }