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]: ['391', 'y', '447', '345', '157', '265', 'x', '261', 'm', 'f', 'x', 'x', '379', 'r', 'g']
[A]: 1, 2, 3, 4, 5, 6, 7, 9


[Q]: ['a', '399', 's', 'e', '495', 'd', 'f', 'a', '323']
[A]: 2, 3, 4, 5, 9


[Q]: ['e', 'g', '179', '141', '473', '415', 'm', 'h', 'f', '29', '175', '255', 'h']
[A]:
1, 2, 3, 4, 5, 7, 9