Codeforces Round #670 (Div. 2)
Difference between en5 and en6, changed 124 character(s)
Hello Codeforces!↵

[user:gyh20,2020-09-10] and I are glad to invite you to [contest:1406] which will start on [contest_time:1406]. **Note the unusual start time of the round.**↵

 The contest will last for **two hours**, and you will have **five tasks** to solve. The tasks are prepared by me and [user:gyh20,2020-09-10]. This round is rated for participants whose **rating is not higher than 2099**. You can see that my current rating is exactly **2099** :)↵

There might be an interactive problem. You can learn about them [here](https://codeforces.ml/blog/entry/45307).↵

We would like to thank:↵

- [user:isaf27,2020-09-10] for coordinating and helping us with the problems.↵
- [user:namanbansal013,2020-09-10], [user:postscript,2020-09-10], [user:morzer,2020-09-10], [user:Osama_Alkhodairy,2020-09-10], [user:csani,2020-09-10], [user:growup974,2020-09-10], [user:physics0523,2020-09-10], [user:bizhouziwei20,2020-09-10] for testing the problems and providing useful feedback. Special thanks to [user:csani,2020-09-10] for helping us with writing the editorials, and [user:physics0523,2020-09-10] for improving one problem's solution!↵
- [user:c2020hxw,2020-09-10], [user:fisherking,2020-09-10], [user:fangzhijian2020,2020-09-10] for discussing the problems with us.↵
- finally, [user:MikeMirzayanov,2020-09-10] for great platforms Codeforces and Polygon!↵

We tried our best to make the statements short and clear, pretests strong and problems interesting. We hope you like the problems!↵

Score distribution will be announced shortly before the round.↵

Good luck and have fun!↵

**Upd:** Score distribution is **500-750-1250-1750-2500**.


**Upd:** For problem reasons, the contest is delayed for 10 minutes. We are very sorry to keep you waiting, sorry again.

History

 
 
 
 
Revisions
 
 
  Rev. Lang. By When Δ Comment
en10 English feecIe6418 2020-09-30 15:46:13 2
en9 English feecIe6418 2020-09-13 03:14:36 56
en8 English feecIe6418 2020-09-12 19:15:47 537
en7 English feecIe6418 2020-09-12 16:36:26 74
en6 English feecIe6418 2020-09-12 16:25:46 124
en5 English feecIe6418 2020-09-12 13:27:14 2
en4 English feecIe6418 2020-09-12 11:26:16 62
en3 English feecIe6418 2020-09-10 09:59:58 50
en2 English feecIe6418 2020-09-10 09:37:41 3 (published)
en1 English feecIe6418 2020-09-10 08:46:55 1573 Initial revision (saved to drafts)