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: ['469', '65', '111', '135', '209', 'g', '407', 'd', 'r', '325']

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

PROBLEM: ['l', '283', '171', 'q', '465', 'u', '325', 'd', 'j', '349', '351', '229', 'z']

SOLUTION: 1, 2, 3, 4, 5, 6, 7, 8, 9

PROBLEM: ['f', 'n']

SOLUTION:
-1