Definition: 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.
Input: ['45', 'g', '105', 'g', '271', '35', '349', 'y', 'h', '391', '431', '31', '9', '89', 'n']
Output:
0, 1, 2, 3, 4, 5, 7, 8, 9