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: ['265', 'x', '109', '319', 's', 'w', '211']

SOLUTION: 0, 1, 2, 3, 5, 6, 9

PROBLEM: ['229', 'q', 'e']

SOLUTION: 2, 9

PROBLEM: ['p', '75', 'w', '347', '453']

SOLUTION:
3, 4, 5, 7