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]: ['r', 'u', '83', 'x', '155', '89', 'c', '391', '41', 'o', 'i', '161']
[EX A]: 1, 3, 4, 5, 6, 8, 9

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

[EX Q]: ['433', '229', '189', 'l', 'q', '181', '107']
[EX A]:
0, 1, 2, 3, 4, 7, 8, 9