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]: ['339', '473', '485']
[EX A]: 3, 4, 5, 7, 8, 9

[EX Q]: ['s', 't', 'c', '299', 'g', '33', 'o', '485', '345', '295', 'm', '345', 'q', '431', '151']
[EX A]: 1, 2, 3, 4, 5, 8, 9

[EX Q]: ['o', 'n', '357']
[EX A]:
3, 5, 7