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]: ['469', 'y', 'j', 'u', '475', 'k', 'k']
[EX A]: 4, 5, 6, 7, 9

[EX Q]: ['j', '355', 'w', 'f', 'b', '183', '327', '277']
[EX A]: 1, 2, 3, 5, 7, 8

[EX Q]: ['s', '231']
[EX A]:
1, 2, 3