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]: ['469', '13', '333', '271', '223', '341', 'h', '317', '303']
[EX A]: 0, 1, 2, 3, 4, 6, 7, 9

[EX Q]: ['r', '273', 'h', '421', 'k', 'r', 'k', 't', 'x', 's', 'j']
[EX A]: 1, 2, 3, 4, 7

[EX Q]: ['d', 'o', 'z', 'c', 'w', '371', 'o']
[EX A]:
1, 3, 7