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]: ['k', '135', '297']
[EX A]: 1, 2, 3, 5, 7, 9

[EX Q]: ['7', 'q', '201', 'p', '369', 'a', 'g', '429', 'i', 'g', '329', '295', '203']
[EX A]: 0, 1, 2, 3, 4, 5, 6, 7, 9

[EX Q]: ['n', 'w', '271', 'c', '457', 'd', 'd', '455', 'v', '15', 'm', 'g', '259', '471', '275']
[EX A]:
1, 2, 4, 5, 7, 9