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]: ['f', '463', '169', '175']
[EX A]: 1, 3, 4, 5, 6, 7, 9

[EX Q]: ['61', '255', 'u', '219', '197', 'i', '453', 'i', '267', '217', 'o', 'g']
[EX A]: 1, 2, 3, 4, 5, 6, 7, 9

[EX Q]: ['k', '81', '463', '389', 'r', '455', 'e', 'r', '25', '313']
[EX A]:
1, 2, 3, 4, 5, 6, 8, 9

