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: ['41', 'o', 'm', 'h', 's', 't', '407', '445', '371', '93', '291', '457', 'r', '391', 'a']

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

PROBLEM: ['p', '357', '253', 'e', '303', '467', 'r', 'l']

SOLUTION:
0, 2, 3, 4, 5, 6, 7