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: ['f', '367', 'w', '227', '201', 'n', '213', '11']

SOLUTION: 0, 1, 2, 3, 6, 7

PROBLEM: ['379', '485', '415', '37', '221', '125', '245', '87', 'a']

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

PROBLEM: ['p', '307', 'd', '359', '383']

SOLUTION:
0, 3, 5, 7, 8, 9