TASK 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.
PROBLEM: ['207', 'w', '317', '241', 'j', '443']

SOLUTION: 0, 1, 2, 3, 4, 7

PROBLEM: ['243', '1', 'j', 'e', '171', 'k', '177', '85', '367', 's', 't', '107', 'z', '283', '15']

SOLUTION: 0, 1, 2, 3, 4, 5, 6, 7, 8

PROBLEM: ['193', 'p']

SOLUTION:
1, 3, 9