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]: ['k', '373', 'b', '305', 'i', 'n', 'z', 'm', 'c']
[EX A]: 0, 3, 5, 7

[EX Q]: ['7', 'n', '443', '131', '189', '187', '261', '451', '449', 'o', 'i', 't', '15']
[EX A]: 1, 2, 3, 4, 5, 6, 7, 8, 9

[EX Q]: ['269', 'v', '455', 'n', '263', 'x', '75', '127', 'm', 'k', '393', 'o', 'h', '25']
[EX A]:
1, 2, 3, 4, 5, 6, 7, 9