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: ['t', '251', 'b', '241', 'z', '255']

SOLUTION: 1, 2, 4, 5

PROBLEM: ['o', 'k', 'i']

SOLUTION: -1

PROBLEM: ['375', '119']

SOLUTION:
1, 3, 5, 7, 9