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]: ['247', 's', 'y', 'c', '421']
[A]: 1, 2, 4, 7


[Q]: ['k', 'k', 'o', 'c', 'p', '301', 'o']
[A]: 0, 1, 3


[Q]: ['c', 'i', 'j', '451', 'x', 'i', 'w', 'f']
[A]:
1, 4, 5