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]: ['425', 'x', 'u', 'f', 'v', '481', 'm', 'y', '159', '1']
[EX A]: 1, 2, 4, 5, 8, 9

[EX Q]: ['k', 'x', '299', 'a', 'y', '105', 's', '249', 'g', '439', 'k', '1', 'h', 'd', '43']
[EX A]: 0, 1, 2, 3, 4, 5, 9

[EX Q]: ['c', 'm', '445', '301', 'y', '341', 'w', '41', 't', '363', 'n', '421', '421']
[EX A]:
0, 1, 2, 3, 4, 5, 6