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.

[EX Q]: ['121', 'm', 'n', '143', '281', 'c', 'j']
[EX A]: 1, 2, 3, 4, 8

[EX Q]: ['q', 'p', 'y', 'p', 'k', 'r', '481', 'v']
[EX A]: 1, 4, 8

[EX Q]: ['q', '425', 'd', '171', 'j', '441']
[EX A]:
1, 2, 4, 5, 7