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', '367', 'w', '227', '201', 'n', '213', '11']

SOLUTION: 0, 1, 2, 3, 6, 7

PROBLEM: ['k', '217']

SOLUTION: 1, 2, 7

PROBLEM: ['s', 'z']

SOLUTION:
-1