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: ['63', 'd', 'd', 'h', 'p', 'j', 'c', '11', 'p', '405', 'k', '59', 'p']

SOLUTION: 0, 1, 3, 4, 5, 6, 9

PROBLEM: ['i', 'f', '109']

SOLUTION: 0, 1, 9

PROBLEM: ['141', '305', 'h', 'c', 'n', 'l', 'f', '285']

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