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: ['1', 'm']

A: 1
****
Q: ['473', '449', '357', 'p', 'p', 'e', '377', '77']

A: 3, 4, 5, 7, 9
****
Q: ['h', '493', '65', 'o', '495', '475', '251', '61', '101', '161', 'd', 'd', 'i']

A:
0, 1, 2, 3, 4, 5, 6, 7, 9
****