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.

Q: ['343', 'c', '7', '271', 'm', '151', 'd', 'n', '305', 'y', 'w', '255']

A: 0, 1, 2, 3, 4, 5, 7
****
Q: ['483', 'e', '57', 'a', '101', 'f', 'z', 'q', '115', 'x', '3', '305', '435', '45']

A: 0, 1, 3, 4, 5, 7, 8
****
Q: ['z', '491', 'd', 'u', 's']

A:
1, 4, 9
****