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]: ['s', 't', '189', 'j', 'r']
[EX A]: 1, 8, 9

[EX Q]: ['h', '477', 'w', '315', 'k', 'd', '367', '411', '207', 'b', '81', 'k', 'f', '107', '103']
[EX A]: 0, 1, 2, 3, 4, 5, 6, 7, 8

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