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]: ['223', '71']
[A]: 1, 2, 3, 7


[Q]: ['113', 'x', '215', '289', '403', 'x', '345', 's', '407', 'w', 'g', 'a', 'q', '99']
[A]:
0, 1, 2, 3, 4, 5, 7, 8, 9