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:
['n', 'g', 'd']
answer:
-1


question:
['z', '273', '447', 'h']
answer:
2, 3, 4, 7


question:
['53', '435', 'w', 'b', 'x', '15', '45', '103']
answer:

0, 1, 3, 4, 5