@property
    def import_branch(self):
        return self._import_branch
Brute force: O(n^3)
dataset/ETHPy150Open openstack/git-upstream/git_upstream/lib/importupstream.py/ImportUpstream.import_branch--crossover with--dataset/ETHPy150Open algorhythms/LeetCode/221 Maximal Square.py/Solution.maximalSquare