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]: ['f', '463', '169', '175']
[EX A]: 1, 3, 4, 5, 6, 7, 9

[EX Q]: ['39', '461', '163', '379', '331', '137', 'g', 'm']
[EX A]:
1, 3, 4, 6, 7, 9