public static int cookies(int k, List<int> A)
    {
        var  items = new PriorityQueue<int, int>();

        for (int i = 0; i < A.Count; i++)
        {   
            items.Enqueue(A[i], A[i]);
        }

        int count = 0;
        while (items.Count > 1 && items.Peek() < k){
            var newItem = items.Dequeue() + (2 * items.Dequeue());
            
            items.Enqueue(newItem, newItem);

            count++;
        }

        return items.Peek() < k ? -1 : count;
    }