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.

[Q]: ['s', '45']
[A]: 4, 5


[Q]: ['k', 'a', '437', '461', 'b', '341', '175']
[A]: 1, 3, 4, 5, 6, 7


[Q]: ['267', '411', 'k', 's', '23', '369', 'h']
[A]:
1, 2, 3, 4, 6, 7, 9