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: ['119', '329', 'w']

SOLUTION: 1, 2, 3, 9

PROBLEM: ['t', '493', 's', 'f', '279', 'f']

SOLUTION: 2, 3, 4, 7, 9

PROBLEM: ['261', '489', 'o', '293', 'n', '123', '1', '175']

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