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: ['z', 'b', 'c', 'l', '453', 'h', '215', '447', '487', 'p', 'y', 'v']

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

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

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

PROBLEM: ['483', 'p', '223', 'p']

SOLUTION:
2, 3, 4, 8