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]: ['u', '343', '167', 'a']
[EX A]: 1, 3, 4, 6, 7

[EX Q]: ['i', 'f', '409', 'c', '83']
[EX A]: 0, 3, 4, 8, 9

[EX Q]: ['c', '3', '405', '435']
[EX A]:
0, 3, 4, 5