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: ['k', '233', 'h', 'd', 's', '83', '149', 'p', 'm']

SOLUTION: 1, 2, 3, 4, 8, 9

PROBLEM: ['251', '173', '301', '339', '267', 'p', '347']

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

PROBLEM: ['z', 'x', '223', '325', 'r', '185', 'g', '117', 'o', 'g', '495', 't']

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