From ecaafb76b1d05fcf90adfa182857a1cbca1847fe Mon Sep 17 00:00:00 2001
From: ljcjames <ljcjames@qq.com>
Date: Mon, 22 Aug 2022 23:19:43 +0800
Subject: [PATCH] =?UTF-8?q?=E4=B8=89=E5=88=86=E5=B7=A5=E5=85=B7=E7=AE=B1?=
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---
 8.21/B-Light/Readme.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/8.21/B-Light/Readme.md b/8.21/B-Light/Readme.md
index 2c96c92..40f45a9 100644
--- a/8.21/B-Light/Readme.md
+++ b/8.21/B-Light/Readme.md
@@ -1,5 +1,5 @@
 # 题目
-* 链接
+* https://vjudge.net/contest/511373#problem/B
 ### 题意
 如图，求L
 ![](look)
@@ -13,4 +13,4 @@ midr(mid+r)/2;
 ### 易错点
 * 起始位置
 ### 工具箱
-* 
\ No newline at end of file
+* 三分 15. https://note.youdao.com/web/#/file/recent/note/WEBbda8b62456b542bf29edf7a52005e158/
\ No newline at end of file