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]: ['255', 'u', 's', 'g', '445']
[EX A]: 2, 4, 5

[EX Q]: ['333', '207', '13', '339', 'n', '387']
[EX A]: 0, 1, 2, 3, 7, 8, 9

[EX Q]: ['39', '429', 'm', '301', 'e', 'a', 'z', '461', 'b', '427', '339']
[EX A]:
0, 1, 2, 3, 4, 6, 7, 9