for (int i = 0; i < B.Count; i++)
        {
            if (B[i] > 0)
            {
                for (int k = 0; k < B[i]; k++)
                {
                    A.Add(B[i]);
                }
            }
            else if (B[i] == 0)
            {
                continue;
            }
            else if (B[i] < 0)
            {
                for (int m = 0; m < Math.Abs(B[i]); m++)
                {
                    if (Math.Abs(B[i]) <= A.Count)
                    {
                        A.RemoveAt(A.Count - 1);
                    }
                    else if (Math.Abs(B[i]) > A.Count)
                    {
                        A.Clear();
                        goto Show;
                    }
                }
            }
        }
        Show:
        A.Add(-1);
        for (int i = 0; i < A.Count; i++)
        {
            Console.Write("{0} ", A[i]);
        }