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]: ['t', '175', '163', 'k', '279', '385', 'y', '71', 'g']
[EX A]: 1, 2, 3, 5, 6, 7, 8, 9

[EX Q]: ['s', '45']
[EX A]: 4, 5

[EX Q]: ['187', 'g', 'v']
[EX A]:
1, 7, 8