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zju以前的某次月赛题In Reply To:请教一个三维计算几何问题，说有那么种多面体，即使在其每个顶点上都放上卫兵，其内部某些区域仍然无法被卫兵看到，那位大牛有这类图片，给我发下？243933859@qq.com Posted by:MetalHeart at 2008-06-11 22:11:09 Followed by:
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