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', 'u']
-1

['103', '431', 'z', '99', 'h', 'c', 'a', '433', '55', 'k', 'a']
0, 1, 3, 4, 5, 9

['257', 'a', '429', '375', 'd', '101', '115']

0, 1, 2, 3, 4, 5, 7, 9