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]: ['h', '475', 'x', '53', '461', 'c']
[EX A]: 1, 3, 4, 5, 6, 7

[EX Q]: ['101', 'o', 'j', 'q', '283', '229', '271', 'r', 'n', '481', '101', '477', 'w']
[EX A]: 0, 1, 2, 3, 4, 7, 8, 9

[EX Q]: ['j', '173', '237', 'j', 'c']
[EX A]:
1, 2, 3, 7