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', 't', 'a', '163', '297', '97', '487', '341', '193']

SOLUTION: 1, 2, 3, 4, 6, 7, 8, 9

PROBLEM: ['k', '153', '13']

SOLUTION: 1, 3, 5

PROBLEM: ['x', 'd', 'h', 'w', '451', 'c', 'd']

SOLUTION:
1, 4, 5