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]: ['l', 'n', '477', '227', '71', 'p', 'q', '277', '135', 'i']
[EX A]: 1, 2, 3, 4, 5, 7

[EX Q]: ['183', '235', 'a', '261', 'z', 'n', 's', 'q', 'm', '311', '399', '457']
[EX A]: 1, 2, 3, 4, 5, 6, 7, 8, 9

[EX Q]: ['103', '43', '31']
[EX A]:
0, 1, 3, 4