Codeforces Round #668
Difference between en3 and en4, changed 73 character(s)
Hello Codeforces!↵

We are glad to invite you to [contest:1404] and [contest:1405], which will take place on [contest_time:1404].↵

The problems were created by [user:Ari,2020-09-04], [user:Kuroni,2020-09-04], [user:Maripium,2020-09-04], [user:Monogon,2020-09-04], [user:antontrygubO_o,2020-09-04] and [user:hugopm,2020-09-04].↵

We would like to thank:↵

- [user:dorijanlendvaj,2020-09-04], [user:Jatana,2020-09-04] and [user:MrDecomposition,2020-09-04] for helping with the preparation of the tasks.↵

- [user:gamegame,2020-09-04] for always being nice and supportive.↵

- [user:DatVu,2020-09-04], [user:Maripium,2020-09-04], [user:MofK,2020-09-04] and [user:atoiz,2020-09-04] for stealing the round #666, forcing us to retheme around ponies.↵

- [user:Monogon,2020-09-04] for making the author list more colorful.↵

- [user:TwentyFour,2020-09-04], [user:thenymphsofdelphi,2020-09-04], [user:qlf9,2020-09-04], [user:mcfr,2020-09-04], [user:Tlatoani,2020-09-04], [user:i_love_Lisa,2020-09-04], [user:McDic,2020-09-04], [user:cup_of_tea,2020-09-04], [user:yann-dev,2020-09-04], [user:Noam527,2020-09-04], [user:Mbfibat,2020-09-04], [user:wolfris,2020-09-04], [user:ffao,2020-09-04], [user:Falseeee,2020-09-04], [user:fpc_coder,2020-09-04] and [user:fivefourthreeone,2020-09-04] for testing.↵

- [user:MikeMirzayanov,2020-09-04] for the Codeforces and Polygon platforms.↵

There will be **5 problems** in each division and will be given **2 hours** to solve them (or post memes in the comments if you can't solve any).↵

We tried to make interesting problems, short statements, useful samples and strong pretests, and we hope you will like it.↵

Scoring will be announced shortly **before** the round and editorial will be posted shortly **after** the round (it is already written).↵

Good luck!↵

**UPD:** The number of problems is now 5 in each division.↵

**UPD2:** Score distribution:↵

- Div.1: **500 — 1000 — 1500 — 2250 — 3000**↵
- Div.2 : **500 — 1000 — 1750 — 2250 — 3000**


**UPD3:** [Editorial](https://codeforces.com/blog/entry/82366) is out

History

 
 
 
 
Revisions
 
 
  Rev. Lang. By When Δ Comment
en6 English hugopm 2020-09-09 20:53:51 389 Winners
en5 English hugopm 2020-09-06 20:25:54 159
en4 English hugopm 2020-09-06 19:54:13 73 Add editorial
en3 English hugopm 2020-09-06 13:31:07 176 Score distribution
en2 English hugopm 2020-09-06 00:50:08 113
en1 English hugopm 2020-09-04 19:35:06 1861 Initial revision (published)