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朴素无比的方法花里胡哨的 就3个任务 1.连通性判断 2.遍历一遍，设一个点的坐标(0,0,0,0)统计四个维度坐标的上下限 3.顺便看看有没有矛盾的地方，比如说这边连出去那边没连回来的情况 有了这些不管怎么写都能过吧 Followed by:
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