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]: ['343', 'c', '7', '271', 'm', '151', 'd', 'n', '305', 'y', 'w', '255']
[A]: 0, 1, 2, 3, 4, 5, 7


[Q]: ['y', 'b']
[A]: -1


[Q]: ['m', '243', 'b', 'j', '371']
[A]:
1, 2, 3, 4, 7