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]: ['345', '393', 'v', 'l', 'b', 'd', 'k', 'q', 'x']
[EX A]: 3, 4, 5, 9

[EX Q]: ['391', 'y', '447', '345', '157', '265', 'x', '261', 'm', 'f', 'x', 'x', '379', 'r', 'g']
[EX A]: 1, 2, 3, 4, 5, 6, 7, 9

[EX Q]: ['s', '3']
[EX A]:
3