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]: ['299', '371', '313', '17', 't', 'q']
[EX A]: 1, 2, 3, 7, 9

[EX Q]: ['u', 'z', 'p', '99', 'b']
[EX A]: 9

[EX Q]: ['u', 'q', '343']
[EX A]:
3, 4