萌新刚学OI1秒，不知道为什么厌氧，求调QAQ

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前排妲娇❤![](https://cdn.luogu.com.cn/upload/image_hosting/qau3e908.png) 没人？我先![](https://cdn.luogu.com.cn/upload/image_hosting/drpzbuzv.png) ![](https://cdn.luogu.com.cn/upload/image_hosting/pw7x9usv.png)
by Arcaea @ 2023-09-21 21:39:57

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