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======week 4======
(2020.05.22-2020.05.29)
=====团队=====
**1.训练**
补题
**2.推荐**
[[https://blog.csdn.net/Rising_shit/article/details/104437693|从线性筛到莫比乌斯反演]]
=====个人=====
====CJY====
**1.新题**
codeforces 641 div1 A B C
B.[[.:cf641_b]]
===ZRX===
**1.新题**
打了 education round 88
打了 codeforces round 645
**2.模板**
[[https://blog.csdn.net/Rising_shit/article/details/104437693|从线性筛到莫比乌斯反演]]
====selia====
===模板===
[[https://editor.csdn.net/md?articleId=106432993|SAM]]