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: ['h', '309', 'q', 'w', '367', '245', '181', 'w', '377', '33']

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

PROBLEM: ['479', 's', 'g']

SOLUTION: 4, 7, 9

PROBLEM: ['n', 'j', 'e', 'd', 'q', '243', 'z', 'v']

SOLUTION:
2, 3, 4