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', '291', '145', 'd', 'z', '355', 'r']

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

PROBLEM: ['d', '25', '323', 'k', 'e']

SOLUTION: 2, 3, 5

PROBLEM: ['z', 'w']

SOLUTION:
-1

