Codeforces Round #432 editorial

Revision en4, by Arpa, 2017-09-05 16:50:00

Hi!

Thanks to all of you participates, who made this contest possible. And thanks to Lewin and Arterm, also to the great coordinator, Nikolay KAN Kalinin, zemen, white2302, and for sure MikeMirzayanov.

Test data and code solutions. It's the original packages from polygon, you can find pretests, tests, generators, validators, etc in it.

Hints

Div.2 A: Take a look at notes section.

Div.2 B: Create a circle with these points.

Div.1 B: Fix the gcd.

Div.1 C: Tag: Grundy number.

Details

Div.1 C

I want to thank my grand teacher Mojtaba moji FayazBakhsh here. Who was my teacher not only for coding but also a teacher for my life. Thanks Mojtaba! Thanks to you and all of other good teachers in the world.

Solutions

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Author: Arpa

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Author: Arpa

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Author: Lewin

Thanks to Lewin, the writer of this tutorial.

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Author: Arpa

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Author: Arpa

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Author: Arterm

Thanks to white2302, the writer of this tutorial. I translated this tutorial to English.

I'll add editorial of 850E soon.

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Author: Lewin

Thanks to Lewin, the writer of this tutorial.

I’d like to finish the editorial with the below poem by Hatef Esfahani:

چه کند کوه کن دلشده با غیرت عشق گر نه بر فرق زند تیشه ز رشک خسرو

Translation: What can lover (Farhad) do with the power of love? He has no choice but to hurt himself by ax because he feels jealousy to Khosrow. More information about Khosrow and Shirin story.

Good luck and see you soon ;)

Tags editorial, round432

History

 
 
 
 
Revisions
 
 
  Rev. Lang. By When Δ Comment
en5 English Arpa 2017-09-08 09:08:33 121 editorial for E added
en4 English Arpa 2017-09-05 16:50:00 170
en3 English Arpa 2017-09-05 07:40:02 242
en2 English Arpa 2017-09-04 22:40:25 1 Tiny change: 'rin story].(https://e' -> 'rin story](https://e'
en1 English Arpa 2017-09-04 22:22:17 1870 Initial revision (published)