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.

[EX Q]: ['257', '111', 'g', '277', '473', '105', 'x', '217']
[EX A]: 0, 1, 2, 3, 4, 5, 7

[EX Q]: ['k', '135', '297']
[EX A]: 1, 2, 3, 5, 7, 9

[EX Q]: ['d', '379', 'w', '499', '207', 'p', 'd', 'u', 's', 'q', '245']
[EX A]:
0, 2, 3, 4, 5, 7, 9