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]: ['c', '155', '61']
[EX A]: 1, 5, 6

[EX Q]: ['q', 'a', '149']
[EX A]: 1, 4, 9

[EX Q]: ['303', '83', 'o', 'l', '381', '401', 'i', '247']
[EX A]:
0, 1, 2, 3, 4, 7, 8