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: ['325', '269', '199', '177', 'n', '319', '385', '227', 'o', '393', 'y', 'g', 'f', '347', '109']

SOLUTION: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9

PROBLEM: ['p', 'r', 'e', 'b', '149', '361', 'i']

SOLUTION: 1, 3, 4, 6, 9

PROBLEM: ['459', 'd', 't']

SOLUTION:
4, 5, 9