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: ['1', 'm']

Answer: 1


Question: ['q', 'y', '49', '497', 'a', 'f', 'v', 'x', 'f', '347', '183', '489']

Answer: 1, 3, 4, 7, 8, 9


Question: ['199', 'm', 't', '441', 'q', '341', '257', 'm', '341', '151', 'j', 'x', '139']

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