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: ['43', 'd']

Answer: 3, 4


Question: ['v', 'n', '303', '355', 'n', '205', '393', '239', '239', 'm', '123', '487']

Answer: 0, 1, 2, 3, 4, 5, 7, 8, 9


Question: ['21', '439', 'a', 'y', '35', '335', '23', '165', '469']

Answer:
1, 2, 3, 4, 5, 6, 9