Anadi's blog

By Anadi, history, 5 days ago, In English,

Hello Codeforces!

We have a pleasure to invite you to Codeforces Round #647 (Div. 1) and Codeforces Round #647 (Div. 2). This round will take place on Jun/04/2020 17:35 (Moscow time). In both divisions, you will have 2.5 hours to solve 6 problems. Three of them will be shared.

The problems for this round were prepared by MicGor, Grzmot, Okrut and me.

We would like to thank everyone who made this round possible:

We hope you will enjoy the problem set! Good luck!

UPD: Score distribution:

  • Div 1: $$$500$$$ $$$-$$$ $$$1250$$$ $$$-$$$ $$$2000$$$ $$$-$$$ $$$2500$$$ $$$-$$$ $$$3000$$$ $$$-$$$ $$$3500$$$
  • Div 2: $$$500$$$ $$$-$$$ $$$1000$$$ $$$-$$$ $$$1500$$$ $$$-$$$ $$$2000$$$ $$$-$$$ $$$2750$$$ $$$-$$$ $$$3500$$$

UPD: Editorial

UPD: Congratulations to the winners!

Div. 1:

Div. 2

Below is a message for you from MikeMirzayanov:

AlgoMuse

With this round, we want to say thank you to Algo Muse for the significant contribution and support!

Algo Muse is an educational site that conducts online algorithmic contests in pen-and-paper style (no coding). It was originally started to help students prepare for theory qualifiers for graduate admissions. At present, the problems have a broader appeal, though occasionally an odd problem may require knowledge of linear algebra, probability, or group theory. The website is maintained by former students of IIT Bombay. To find out more, visit their website or their twitter account.

Read more »

 
 
 
 
  • Vote: I like it
  • +894
  • Vote: I do not like it

By Anadi, history, 2 months ago, In English,

XX Open Cup Grand Prix of Wrocław takes place on Sunday, March 29, 2020 at 10:00 CEST.

Link to the contest (you need an Open Cup login to participate).

The round is based on local competitions organized in 2018 and 2019 in Wrocław. Tasks were invented, prepared and translated by gawry, bardek, Arti1990, Rafiki53, Skedar, koratel, Kreyyy, Łukasz Zatorski, Arblash, yarek, MicGor, Maciektoja, w0nsh, kobor, Fly_37 and me.

Good luck!

UPD: There was a wrong time written at the beginning! I got confused because of the time change in Poland and I am deeply sorry about that.

UPD: Editorial

Read more »

 
 
 
 
  • Vote: I like it
  • +168
  • Vote: I do not like it

By Anadi, history, 19 months ago, In English,

1043A — Elections

Tutorial
Solution

Author: FCB1234

1043B — Lost Array

Tutorial
Solution

Author: FCB1234

1043C — Smallest Word

Tutorial
Solution

Author: FCB1234

1043D — Mysterious Crime

Tutorial
Solution

Author: FCB1234

1043E — Train Hard, Win Easy

Tutorial
Solution

Author: Mateuszrze

1043F — Make It One

Tutorial
Solution 1
Solution 2

Author: FCB1234

1043G — Speckled Band

Tutorial
Solution 1
Solution 2

Author: isaf27

Read more »

 
 
 
 
  • Vote: I like it
  • +113
  • Vote: I do not like it

By Anadi, 19 months ago, In English,

I would like to invite you to participate in the rated Codeforces Round #519 by Botan Investments. Date and time of the round: Oct/28/2018 18:35 (Moscow time).

This is a combined round having 7 problems and lasting 2 hours, and it will be rated.

Tasks for you were prepared by FCB1234, Grzmot, isaf27 and Mateuszrze. Also thanks for:

KAN and _kun_ for help in preparing the problems; pavel.savchenkov, Nerevar, map, GR1n, rutsh, AlexFetisov and winger for testing the round; MikeMirzayanov for Codeforces and Polygon platforms.

The round is supported by Botan Investments.

Prizes! Top 50 participants and 20 random participants with rank from 51 to 500 will receive personalized hoodie with CF handle.

Scoring distribution will be announced later. I wish you a high rating and looking forward to see you at the competition!

UPD: I'll be on the community Discord server shortly after the contest to discuss the problems.

UPD: Scoring: 500 1000 1500 2000 2250 2750 3500

UPD: Editorial

The round is over, congratulations to the winners!

  1. scott_wu
  2. mnbvmar
  3. HIR180
  4. ksun48
  5. Benq
  6. geniucos
  7. Alex_2oo8
  8. Petr
  9. Um_nik
  10. V--o_o--V

Read more »

 
 
 
 
  • Vote: I like it
  • +544
  • Vote: I do not like it