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]: ['v', '477', 'j', '339', '245', 'r', '417', 'g', '475', 'n', 'q', '171']
[EX A]: 1, 2, 3, 4, 5, 7, 9

[EX Q]: ['f', 'c', '381', '149', '67', '67', '197', 'i', '289', '491', 'c', 'b']
[EX A]: 1, 2, 3, 4, 6, 7, 8, 9

[EX Q]: ['m', '413', '43', 'b', '165', 'h', 'l', '361', '343', '277']
[EX A]:
1, 2, 3, 4, 5, 6, 7