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]: ['229', 'q', 'e']
[EX A]: 2, 9

[EX Q]: ['a', 'n', '423', 'y', 'y', 'u', '55', 'y', '295', '73', 't', 'p']
[EX A]: 2, 3, 4, 5, 7, 9

[EX Q]: ['q', 'd', 'h']
[EX A]:
-1