时间限制： 2 s 内存限制： 2048 MB 总分： 100 不可用

#7702. Three Spheres and a Tetrahedron

该题目在以下比赛中使用过：

该题目在官方题库中缺失。可能的原因包括：题面表述模糊、测试数据不准确或标准解法有误。因此，该题目仅供参考，不建议尝试解答。

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