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]: ['x', '91', 'q', '417', '385', '455', '393', 'm', 's', 'c', '91', '71', 'n']
[EX A]: 1, 3, 4, 5, 7, 8, 9

[EX Q]: ['411', '367']
[EX A]: 1, 3, 4, 6, 7

[EX Q]: ['455', '127', '185']
[EX A]:
1, 2, 4, 5, 7, 8