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: ['171', 'h', '53', 'o', 'q']

SOLUTION: 1, 3, 5, 7

PROBLEM: ['o', '105', '409', '287', '9', '377', 'h', 'v', 'i', 'j', 'm', '59', 's', '357']

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

PROBLEM: ['285', 'p', 'z', 'z', 't', '257', 'k', 'b', '213', 'z', '91', '147']

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