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]: ['p', 't', '211', 'r', '439', 'h', 'g', 'c', '299', '371']
[EX A]: 1, 2, 3, 4, 7, 9

[EX Q]: ['d', '25', '323', 'k', 'e']
[EX A]: 2, 3, 5

[EX Q]: ['379', 'u', '187', 'd']
[EX A]:
1, 3, 7, 8, 9