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]: ['477', 'a', 'n', 'r', '457', 'g', 'c']
[EX A]: 4, 5, 7

[EX Q]: ['q', 'y', '49', '497', 'a', 'f', 'v', 'x', 'f', '347', '183', '489']
[EX A]: 1, 3, 4, 7, 8, 9

[EX Q]: ['s', '291', '257', 'w', '497', '309']
[EX A]:
0, 1, 2, 3, 4, 5, 7, 9