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.

[Q]: ['b', '351', 'g', 'k', '29', '15', '411', '97', 'r', '27', '279']
[A]: 1, 2, 3, 4, 5, 7, 9


[Q]: ['41', 'o', 'm', 'h', 's', 't', '407', '445', '371', '93', '291', '457', 'r', '391', 'a']
[A]: 0, 1, 2, 3, 4, 5, 7, 9


[Q]: ['z', '171']
[A]:
1, 7