40分其中一种可能

P3387 【模板】缩点

![](https://cdn.luogu.com.cn/upload/image_hosting/sqi1p3is.png?x-oss-process=image/resize,m_lfit,h_170,w_225)
by Deng_Rui_Song @ 2024-04-13 21:16:06

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