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]: ['299', '199']
[A]: 1, 2, 9


[Q]: ['181', 'n', 'p', '349', '321', '457', 'h', 's', 't', 'k', 'x', 'a', '145', '135', 'u']
[A]: 1, 2, 3, 4, 5, 7, 8, 9


[Q]: ['c', '419', '455', '185']
[A]:
1, 4, 5, 8, 9