from functools import reduce
def xorOperation(n: int, start: int) -> int:
    return reduce(lambda a, b: a^b, [start + i * 2 for i in range(n)])

from collections import defaultdict

def getFolderNames(names: List[str]) -> List[str]:
    counted = {}
    ans =[]
    for name in names:
        new_name = name
        while new_name in counted:
            new_name = name + f"({counted[name]})"
            counted[name] += 1

        ans.append(new_name)
        counted[new_name] = 1

    return ans