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:
['u', 'm', 's', '101', '427', 'h', 'i', '463', 'j', '77', '465', 'r']
answer:
0, 1, 2, 3, 4, 5, 6, 7


question:
['p', 'n', 'c', '113', '105', '423', 'k', 'a', '211', 'k', '91', '389']
answer:
0, 1, 2, 3, 4, 5, 8, 9


question:
['271', '389', 'z', 'g', '9', 'k', 'g', '285']
answer:

1, 2, 3, 5, 7, 8, 9


