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: ['163', '375', 'e', 'g', '115', '445', 'c', '393', 'm', '59']

SOLUTION: 1, 3, 4, 5, 6, 7, 9

PROBLEM: ['449', '427', 'g', '397', '439', 'f', 'b', 'z', 't', 'f', 's', '379', 'o']

SOLUTION: 2, 3, 4, 7, 9

PROBLEM: ['301', 'w', 'j', 'r', '397', 'q', '101', '179', 'i', 'g', '453', '171', '275', '463']

SOLUTION:
0, 1, 2, 3, 4, 5, 6, 7, 9