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:
['j', 't']
answer:
-1


question:
['1', 'm']
answer:
1


question:
['h', 't', 'h', 'i', 'c', '441', '117', '463', 'r']
answer:

1, 3, 4, 6, 7


