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.

['345', 'k']
3, 4, 5

['25', 'b', '455', 'n', '305', '271']
0, 1, 2, 3, 4, 5, 7

['253', 'j']

2, 3, 5