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: ['l', 'z', '453', '361', 'p', 'c', 'n', '77', '113', '261', 'g']

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

PROBLEM: ['e', '313', '259', 'i', 'h']

SOLUTION: 1, 2, 3, 5, 9

PROBLEM: ['j', '279']

SOLUTION:
2, 7, 9