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:
['171', 'h', '53', 'o', 'q']
answer:
1, 3, 5, 7


question:
['411', 'n']
answer:
1, 4


question:
['h', 'f', 'h', 'p', 'i', '57', '307', '371', '55', '357', '245', 'r', 'r']
answer:

0, 1, 2, 3, 4, 5, 7