import itertools
from enum import Enum


class Operation(Enum):
    SUB = 0
    ADD = 1

    def __str__(self):
        if self == Operation.SUB:
            return "[]"
        elif self == Operation.ADD:
            return "()"
        else:
            raise Exception("unreachable")

    def __radd__(self, num):
        if self == Operation.SUB:
            return num - 1
        elif self == Operation.ADD:
            return num + 1
        else:
            raise Exception("unreachable")


track = set()

for i in range(13):
    ops_iter = itertools.combinations([Operation.ADD] * i + [Operation.SUB] * i, i)
    for ops in ops_iter:
        correct = sum(ops)
        track.add(f"""i = a{"".join(str(op) for op in ops)};
assert(i == {correct});""")

with open("tests", "w+") as out:
    for test in sorted(track):
        print(test, file=out)