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: ['493', '241', '239', 'g', 'q', '319', '49', '245']

SOLUTION: 1, 2, 3, 4, 5, 9

PROBLEM: ['401', 'a', '273', 'c', '117', 'x', 'b', 'h', 's', 'v']

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

PROBLEM: ['v', '443', 'n', '355']

SOLUTION:
3, 4, 5