_LeMur_'s blog

By _LeMur_, 2 months ago, In English

1917A - Least Product

Author: zidder
Preparation: _LeMur_
Editorial: zidder
Official solution: 238752794

Hint 1
Hint 2
Hint 3
Solution

1917B - Erase First or Second Letter

Author: _LeMur_
Preparation: _LeMur_
Editorial: zidder
Official solution: 238752759

Hint 1
Hint 2
Hint 3
Hint 4
Solution

1917C - Watering an Array

Author: IgorI
Preparation: IgorI
Editorial: IgorI
Official solution: 238743155

Hint 1
Hint 2
Hint 3
Hint 4
Hint 5
Solution
Bonus 1
Bonus 2

1917D - Yet Another Inversions Problem

Author: IgorI
Preparation: IgorI
Editorial: IgorI
Official solution: 238743552

Hint 1
Hint 2
Hint 3
Hint 4
Hint 5
Hint 6
Hint 7
Hint 8
Hint 9
Solution
Bonus 1
Bonus 2

1917E - Construct Matrix

Author: _LeMur_
Preparation: _LeMur_
Editorial: _LeMur_
Official solution: 238752669

Hint 1
Hint 2
Hint 3
Hint 4
Hint 5
Solution
Bonus

1917F - Construct Tree

Author: _LeMur_
Preparation: _LeMur_
Editorial: _LeMur_
Official solution: 238752543

Hint 1
Hint 2
Hint 3
Hint 4
Hint 5
Hint 6
Solution

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By _LeMur_, 2 months ago, In English

Hi, Codeforces!

I'm glad to invite you to take part in Codeforces Round 917, which will take place on Dec/24/2023 17:35 (Moscow time). Round will be rated for participants with rating less than $$$2100$$$. Participants from the first division can take part out of competition.

There will be $$$6$$$ problems for $$$2$$$ hours. The problems are authored by IgorI, zidder and me.

Part of the problems in this round were in the Yerevan SU 28.1₀.₂₀₂3 Contest. If you participated in it or know at least one problem from it, please refrain from participating in this round.

We would like to thank

Scoring distribution: $$$500 - 1000 - 1500 - 2250 - 2500 - 3000$$$

We hope you'll like the problemset! Good luck and have fun!

UPD 1: Editorial

UPD 2: Congrats to our winners:

  • Div1 + Div2
  1. tourist
  2. Sugar_fan
  3. BurnedChicken
  4. Rubikun
  5. kotatsugame
  • Div2
  1. -Misaka-Mikoto-
  2. _chashuibiao_
  3. needy_and_sorry
  4. Godjob
  5. LordVoIdebug

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By _LeMur_, history, 3 years ago, In English

In 2018 Armenia didn't receive any medals from IOI (the last time when Armenia didn't receive any medals from IOI was 2001). After that in 2019 we didn't participate in IOI for political reasons and it turned out that we can't win any medals in IOI already two years.

Exactly two years ago I started to train Armenian school students for IOI and my dream (maybe destination) in the school years was to win SIVLER medal in IOI :) (but I couldn't, I only had an one chance and I received a bronze medal). And finally today my students win 4 medals. Two of them won silver medals (EmilConst and Andreasyan) and two of them won bronze medals (Arayi and enoone) (both of them were very close to silver medal :'( ).

I am proud of you guys!! Great work! Congratulations all of you and wish that this win will be the smallest achievement of your life. And finally now I can say that my dream is completed <3.

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By _LeMur_, history, 5 years ago, In English

It was 3:30 am at Vienna airport and there was nothing else to do :)

Airport

20190829-040249

Our heroes are enoone and Arayi

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By _LeMur_, history, 5 years ago, In English

Why are the contests of VK cup deleted ?

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