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]: ['p', 't', '211', 'r', '439', 'h', 'g', 'c', '299', '371']
[EX A]: 1, 2, 3, 4, 7, 9

[EX Q]: ['211', 'v', 'a', '445', '185', '135', 'v', 'w', 'b', '155', '315', '1']
[EX A]: 1, 2, 3, 4, 5, 8

[EX Q]: ['201', '161', 'b', 'i', '19', 'm', 'z', '299', 'y', '45', 'u']
[EX A]:
0, 1, 2, 4, 5, 6, 9