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Xor-matic

CF724G Xor-matic Number of the Graph

[题目链接](https://codeforces.com/problemset/problem/724/G) 不妨先看一道更为基础的题：[CF845G](https://codeforces.com/problemset/problem/845/G)以及[它的题解](https://www.cnb ......
Xor-matic Number Graph matic 724G
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