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]: ['1', 'm']
[EX A]: 1

[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]: ['p', '363', 's', 'x', '493', '349', 'f', 'm', '465', '261', 'y', '239', 'v', '395']
[EX A]:
1, 2, 3, 4, 5, 6, 9