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: ['433', '133', '255', 'h', '59', 'm', '315', '149', 't', 'y', 'n', '59', '493', '295']

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

PROBLEM: ['119', '189', 'k', 'e', '425', '21', '245']

SOLUTION: 1, 2, 4, 5, 8, 9

PROBLEM: ['281', '425', 'u', '283', '329', 'i', '309', '231', '17']

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