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:
['q', 'u']
answer:
-1


question:
['201', 'm', '157', 's', 'n', 'i', '325', 'x', '247', 'u', '187', 'e', '199']
answer:
0, 1, 2, 3, 4, 5, 7, 8, 9


question:
['241', 'u', 'k', '347', '309', '273', 'n']
answer:

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