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: ['z', 'g', '311', 'd', 's', 'w']

SOLUTION: 1, 3

PROBLEM: ['283', '37', '381', 'o', '497', 'j', 'j']

SOLUTION:
1, 2, 3, 4, 7, 8, 9