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]: ['z', '209']
[EX A]: 0, 2, 9

[EX Q]: ['s', '95', 'j', '173', '437', '143', 'n', '357', 'w', '239', '219']
[EX A]: 1, 2, 3, 4, 5, 7, 9

[EX Q]: ['m', '107']
[EX A]:
0, 1, 7