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:
['431', '245', '23', 'c', '185', 'k', '155', '163', 'e', '35', 'r', '175', '163']
answer:
1, 2, 3, 4, 5, 6, 7, 8


question:
['411', 'n']
answer:
1, 4


question:
['407', '17', 'u', '79', 'g', '243', '363', 'q', 'f', '363', '369', '379', 'i']
answer:

0, 1, 2, 3, 4, 6, 7, 9