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: ['59', '437', '145', '165', '217', 'l', '185', '495', 'z']

SOLUTION: 1, 2, 3, 4, 5, 6, 7, 8, 9

PROBLEM: ['c', 'h', '151', 'g', 'd', 'd', 'k', '37']

SOLUTION: 1, 3, 5, 7

PROBLEM: ['389', '493', 'v', '203', '265', 'd', '337', '271', 'l', 'n', '45', 'r', 'z']

SOLUTION:
0, 1, 2, 3, 4, 5, 6, 7, 8, 9