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: ['z', 'x', 'c', 't', '129', 'm', 'o', '315', '181', '349', 'k', 'r', 'x', 'm']

1, 2, 3, 4, 5, 8, 9