三分工具箱

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ljcjames 2022-08-22 23:19:43 +08:00
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# 题目
* チエスモ
* https://vjudge.net/contest/511373#problem/B
### 题意
如图求L
![](look)
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### 易错点
* 起始位置
### 工具箱
*
* 三分 15. https://note.youdao.com/web/#/file/recent/note/WEBbda8b62456b542bf29edf7a52005e158/