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]: ['87', '139', 'y', '129', '255', '227', '103', 'j']
[EX A]: 0, 1, 2, 3, 5, 7, 8, 9

[EX Q]: ['z', '375', 'v', 'o', 'v', '31', 'u', 'x', 'q', 'x', '71', 'n', 'v']
[EX A]: 1, 3, 5, 7

[EX Q]: ['y', 'm', 'y', '405']
[EX A]:
0, 4, 5