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]: ['473', '357', 'i', 'j', '299', 's', '495', '165', 'o', 'l', 'x', 'v', '1', 'o', '469']
[EX A]: 1, 2, 3, 4, 5, 6, 7, 9

[EX Q]: ['369', '59']
[EX A]:
3, 5, 6, 9