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]: ['475', 's', '123', '389', 'y', 'm', 'v', '47', 'u', '479', '357', '279', '137', 'l', 'i']
[EX A]: 1, 2, 3, 4, 5, 7, 8, 9

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

[EX Q]: ['173', '281', '155', 'b', 'm', 'e', '205', 'p', 'u', 'i', '449', '355', 'r', 'j', '397']
[EX A]:
0, 1, 2, 3, 4, 5, 7, 8, 9