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: ['363', 'w', '151', 'd']

SOLUTION: 1, 3, 5, 6

PROBLEM: ['y', '281', '313', '21', 'i', '377', 'e', '111', '71', '231', '409', 'k']

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

PROBLEM: ['n', '67', '53', 'd', 'o', 'b', '139']

SOLUTION:
1, 3, 5, 6, 7, 9