Hello, Codeforces!

I'm very glad to invite you to Codeforces Round 658 (Div. 1) and Codeforces Round 658 (Div. 2). This contest will take place on Jul/21/2020 17:35 (Moscow time). In both divisions, you will have 2 hours to solve 5 problems (and one subtask). The score distribution will be announced closer to the start of the round.

Huge thanks to:

• isaf27 for excellent coordination of this round
• Fanurie, antontrygubO_o, Ari, DeadlyCritic, gamegame, coderz189, hugopm, Kuroni, IaMaNanBord, Priyank, SecondThread, solvemproblr, talibmohd, WNG for testing the problems and providing useful feedback.
• MikeMirzayanov for providing Codeforces and Polygon platforms.

I've worked hard to ensure the pretests are short and the statements are strong. Remember to only read the problems that you can solve, and may you have the best of luck!

Because I know you all have so many questions, I have compiled an FAQueue

• Q: Is it rated?
• A:

UPD Here is the score distribution:

Div. 2: 500 — 1250 — (1000 + 1000) — 2250 — 3000

Div. 1: (500 + 500) — 1500 — 2000 — 2500 — 3000

UPD Editorial