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: ['173', '281', '155', 'b', 'm', 'e', '205', 'p', 'u', 'i', '449', '355', 'r', 'j', '397']
Output:
0, 1, 2, 3, 4, 5, 7, 8, 9