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]: ['229', '369', 'c', '7', 'f', 'h', '455', 't', '249', 's']
[A]: 2, 3, 4, 5, 6, 7, 9


[Q]: ['f', '73', 'k', '333', '345', 'e', 'x', 'j']
[A]: 3, 4, 5, 7


[Q]: ['v', 'w', 'k']
[A]:
-1