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]: ['i', 'f', 'g', '267', '113', '93', 'r', '401', 'g', 'e']
[EX A]: 0, 1, 2, 3, 4, 6, 7, 9

[EX Q]: ['411', 'n']
[EX A]: 1, 4

[EX Q]: ['n', 'k', '409']
[EX A]:
0, 4, 9