链接
题目传送门：http://www.lydsy.com/JudgeOnline/problem.php?id=3417
神犇题解传送门：http://blog.csdn.net/popoqqq/article/details/44590185
题解
首先，注意到这™是一个无向图
于是如果d成立的话，d+2也一定存在
于是分奇偶求出下界即可
题目传送门：http://www.lydsy.com/JudgeOnline/problem.php?id=3417
神犇题解传送门：http://blog.csdn.net/popoqqq/article/details/44590185
首先，注意到这™是一个无向图
于是如果d成立的话，d+2也一定存在
于是分奇偶求出下界即可
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