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]: ['345', 'k']
[EX A]: 3, 4, 5

[EX Q]: ['b', 'm', '471']
[EX A]: 1, 4, 7

[EX Q]: ['191', 'c', '183', '371', 's', '477', '469', 'u', 'j']
[EX A]:
1, 3, 4, 6, 7, 8, 9