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]: ['479', 's', 'g']
[A]: 4, 7, 9


[Q]: ['c', '471', 'l', 'z', '23', 'c', '43', 'o', '175', 'w', 'c', 'p', '431']
[A]: 1, 2, 3, 4, 5, 7


[Q]: ['v', '55', 'j', 'a', 's', 'd', 'm', '481', '303', 'c']
[A]:
0, 1, 3, 4, 5, 8