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: ['u', 'c', 'f', 'z', '51', '301', 'q', '275']

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

PROBLEM: ['117', '247', '49', '63']

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

PROBLEM: ['m', '377', '483', 'a', 'v', 'e']

SOLUTION:
3, 4, 7, 8