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:
['y', '101', 'g', 'c', 'z']
answer:
0, 1


question:
['483', 'e', '57', 'a', '101', 'f', 'z', 'q', '115', 'x', '3', '305', '435', '45']
answer:
0, 1, 3, 4, 5, 7, 8


question:
['q', '279', '113']
answer:

1, 2, 3, 7, 9