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]: ['71', '7', '341', '199', 'z', 'x', '201']
[EX A]: 0, 1, 2, 3, 4, 7, 9

[EX Q]: ['203', 'p', 'r', 'r', 'c', 'w', 'z', 'w', 'a', '203', 'n']
[EX A]: 0, 2, 3

[EX Q]: ['l', 'a', 'e', 'i', '75', 'q', 'e', '485', '9', 'k', '183', '363', '299', 'e', '105']
[EX A]:
0, 1, 2, 3, 4, 5, 6, 7, 8, 9