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.
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Question: ['y', '101', 'g', 'c', 'z']

Answer: 0, 1


Question: ['y', 'l', 'g', 'w', '13', 'd', '123', '279', '293', 'n', '341', 'n', '359', '35', 'd']

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


Question: ['105', '431', '123', 'u', '495', 'y', 'd', 'c', '271', '367', 'u', 'i']

Answer:
0, 1, 2, 3, 4, 5, 6, 7, 9