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: ['141', 'm', '139', '197', '321', '265', 'p']

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

PROBLEM: ['289', 'f', 'y', 'n', '271', '223', 'v', 'p', 'v', 'w', '7', 'i', '195']

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

PROBLEM: ['b', 'v', 'y', 'r', '199', 'e', '35', '407', '383', '31', 'c', '211']

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