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]: ['239', 's', 'h', 'w', '131', 'i', 'x']
[EX A]: 1, 2, 3, 9

[EX Q]: ['45', 'n', 'u', '199', 'y', 'w']
[EX A]: 1, 4, 5, 9

[EX Q]: ['83', '231', 'f', '277', 't']
[EX A]:
1, 2, 3, 7, 8