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]: ['b', 'n', '369', '199', 'r', '165', '63', 'y', '331', '57']
[EX A]: 1, 3, 5, 6, 7, 9

[EX Q]: ['395', 'p', '373']
[EX A]: 3, 5, 7, 9

[EX Q]: ['z', '265', '95', 'c', '493', 'k', 'x', 'i']
[EX A]:
2, 3, 4, 5, 6, 9