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.

[Q]: ['i', '249', '287']
[A]: 2, 4, 7, 8, 9


[Q]: ['291', '445', 'q', 't']
[A]: 1, 2, 4, 5, 9


[Q]: ['q', 'd', 'a', '419']
[A]:
1, 4, 9