instruction:
In this task, you are given an input list A. You need to extract and sort the unique digits used in the list in ascending order. Return -1 if there is no digit in the list.
question:
['b', 'g', '181', 'y', 'd', 'v', '95', 'h', 'n', '103', '41', 'm', 'h', '445', 'z']
answer:
0, 1, 3, 4, 5, 8, 9


question:
['y', 'b']
answer:
-1


question:
['j', 'e', '481', 'q', '445', 'l', 'w', 'o', 'g', '353', '175']
answer:

1, 3, 4, 5, 7, 8