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.

[EX Q]: ['r', 'f', 'l', 'a', 'c', '489', 'e', 'p', 'm', '175', 'l']
[EX A]: 1, 4, 5, 7, 8, 9

[EX Q]: ['251', '173', '301', '339', '267', 'p', '347']
[EX A]: 0, 1, 2, 3, 4, 5, 6, 7, 9

[EX Q]: ['w', 'y']
[EX A]:
-1