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]: ['p', 't', '211', 'r', '439', 'h', 'g', 'c', '299', '371']
[EX A]: 1, 2, 3, 4, 7, 9

[EX Q]: ['85', '101', 'j', 'g', 'o', 'f', 'w', 'o', 'm', '45', 'e', 'z']
[EX A]: 0, 1, 4, 5, 8

[EX Q]: ['317', 'j', '421', 'g', 'l', 's', '389', '231', 'b', '249', '33', 'm', '185', '9', '225']
[EX A]:
1, 2, 3, 4, 5, 7, 8, 9

