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]: ['m', 'n', '481', 'a', '343', '19', 'l', 'l', '477', '71']
[EX A]: 1, 3, 4, 7, 8, 9

[EX Q]: ['185', '425']
[EX A]: 1, 2, 4, 5, 8

[EX Q]: ['q', 'q', 'x', '381', 'z', 'b', '395']
[EX A]:
1, 3, 5, 8, 9