instruction:
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.
question:
['279', 'm', '453', 's', 'x', 'g', 'i', 'x', 'd']
answer:
2, 3, 4, 5, 7, 9


question:
['u', 'z', 'p', '99', 'b']
answer:
9


question:
['105', 'u', '465', 'b', '59', 'd', 'w', 'r', '233', 'v', '197', '189', '329']
answer:

0, 1, 2, 3, 4, 5, 6, 7, 8, 9