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: ['201', 'm', '157', 's', 'n', 'i', '325', 'x', '247', 'u', '187', 'e', '199']

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

PROBLEM: ['73', '199', '189', '27', 'm', '101', '61', '113', 'y', '169']

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

PROBLEM: ['345', '375', 'g', 'p', 'j', 'e', '171', 'c', 's', '185']

SOLUTION:
1, 3, 4, 5, 7, 8