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]: ['345', 'k']
[A]: 3, 4, 5


[Q]: ['v', 'q', '139', '79', '149', '469', 'g', '239', '221', 'v', '77']
[A]: 1, 2, 3, 4, 6, 7, 9


[Q]: ['i', 'y', '259', 't', '329', 'j', 'e', 'j', '235']
[A]:
2, 3, 5, 9