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]: ['r', '321', '355', 'w', 'm', 'v', 'a', 'u', '455', 'n', '169']
[A]: 1, 2, 3, 4, 5, 6, 9


[Q]: ['437', '377']
[A]: 3, 4, 7


[Q]: ['s', 'v', '231', 'q', '365', 'w', 'x', 'j', '137', '465', '477', '395', '189']
[A]:
1, 2, 3, 4, 5, 6, 7, 8, 9