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]: ['473', '449', '357', 'p', 'p', 'e', '377', '77']
[EX A]: 3, 4, 5, 7, 9

[EX Q]: ['201', 'm', '157', 's', 'n', 'i', '325', 'x', '247', 'u', '187', 'e', '199']
[EX A]: 0, 1, 2, 3, 4, 5, 7, 8, 9

[EX Q]: ['411', '193', '433', '397', '353', '115', '177', 'g', 'b']
[EX A]:
1, 3, 4, 5, 7, 9