一些优化建图题

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洛谷团队里搬过来的

Section 1. 题目

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Problem Tried AC Difficulty
P8074   [COCI 2009/2010 #7] SVEMIR 2 2 6
P2403   [SDOI2010] 所驼门王的宝藏 2 2 7
P2632   Explorer 1 1 7
P5676   [GZOI2017] 小z玩游戏 2 2 6
P8207   [THUPC 2022 初赛] 最小公倍树 2 2 7
P4366   [Code+#4] 最短路 3 2 7
 
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