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]: ['r', 'o', 'n', '219', 'a', '419', 'x', '261', 'h', 's', '373', '155', 's', '171']
[EX A]: 1, 2, 3, 4, 5, 6, 7, 9

[EX Q]: ['p', 'p', '91']
[EX A]: 1, 9

[EX Q]: ['101', '463', 'r', '425', '111', 'm', '227', 'o', 'u', '161']
[EX A]:
0, 1, 2, 3, 4, 5, 6, 7