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:
['169', '159', '103', '245', '449', 'a', 'w', 'b', '131', '385']
answer:
0, 1, 2, 3, 4, 5, 6, 8, 9


question:
['469', '65', '111', '135', '209', 'g', '407', 'd', 'r', '325']
answer:
0, 1, 2, 3, 4, 5, 6, 7, 9


question:
['77', '255', 'y', '461']
answer:

1, 2, 4, 5, 6, 7