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]: ['k', '107', '333', '317', 'm', 'w', 'g', 'f']
[EX A]: 0, 1, 3, 7

[EX Q]: ['475', '19', 'k', '307', '417']
[EX A]: 0, 1, 3, 4, 5, 7, 9

[EX Q]: ['53', 'n', '71', '15', 't', '33', '251', 'a', 'd', 'm', 'a', '267', 'y', '419', '193']
[EX A]:
1, 2, 3, 4, 5, 6, 7, 9