Hello everybody!

I'm glad to invite you to Codeforces Round #511 which will take place on 21.09.2018 17:35 (Московское время).

There will be 7 different problems in total, and 5 problems in each division. You will be given 2 hours to solve them.

The problems are prepared by me (ditoly), FallDream and ACMLCZH.

Thanks to 300iq who helps a lot in the round coordination, vintage_Vlad_Makeev, V--o_o--V, demon1999, isaf27, cyand1317 for problem testing and MikeMirzayanov for the platform.

This is my first Codeforces round. Hope you can enjoy it. Good luck!

UPD: The scoring contribution:

Div.1 : 750 — 1000 — 1500 — 2000 — 2500

Div.2 : 500 — 1000 — 1750 — 2000 — 2500

UPD2: Congratulations to the winners!

Div. 1 :

1. consecutivelimit

2. scott_wu

3. ohweonfire

4. zemen

5. ko_osaga

Div. 2 :

1. Ranvan_Darkholme

2. SqwrIwy

3. senpai_notice_me

4. Egor_Gornak

5. PrinzEugen

UPD3: The editorial is published. There are many things about problem-setting in it. Do not miss it.