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', 'z', 'p', '99', 'b']
[EX A]: 9

[EX Q]: ['167', 'o', '23', 'y', 'q', '407', 'q', '325', '43', '83', '401', 'l', '191']
[EX A]: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9

[EX Q]: ['d', 'r']
[EX A]:
-1