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: ['v', 'r', '375', '349', '303', 'j', '257', 'u', '189', '287']

0, 1, 2, 3, 4, 5, 7, 8, 9