Given two sorted lists of integers (ascending order), merge them into a single sorted list that contains no duplicate values. The input lists may contain duplicates within themselves. Return a new sorted list containing each value that appears in either input exactly once. Example: a = [1, 2, 2, 4], b = [2, 3, 4, 5] -> [1, 2, 3, 4, 5]
([1, 2, 2, 4], [2, 3, 4, 5])[1, 2, 3, 4, 5]