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: ['173', 'i', 'w', '425', '27', 'd']

SOLUTION: 1, 2, 3, 4, 5, 7

PROBLEM: ['g', '185', '73', 'h', '455', '333', 'l', '403', 'k', 'e', '77', '429', '423', '453']

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

PROBLEM: ['c', 's', 'k']

SOLUTION:
-1