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]: ['287', 'y', 'b', '79', '39', 'l']
[EX A]: 2, 3, 7, 8, 9

[EX Q]: ['u', '419', 'u', 'h', 'k', 'w', 'a', '289', 'd', 'v', 'u', '117', '327', '85', '441']
[EX A]: 1, 2, 3, 4, 5, 7, 8, 9

[EX Q]: ['w', '277', '479', 'c']
[EX A]:
2, 4, 7, 9