======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]]