Gheal's blog

By Gheal, 7 weeks ago, In English
Vote your favourite problem

103633A — The Hatchet

Author: tibinyte

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Solution
Code (C++)

103633B — Floor Or Xor

Author: tibinyte

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Solution
Code (C++)

103633C — Yet Antother Constructive Problem

Author: Gheal

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Hint 1
Hint 2
Solution
Code (C++)
Post Scriptum

103634A — Bamboo Coloring

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Solution
Post Scriptum

Code (C++) (cadmiumky)

Note: this code can be further optimized by removing the $$$lca$$$ function

103634B — Xor Or Floor

Author: tibinyte

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103634C — Jump

Author: Gheal

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By Gheal, history, 4 months ago, In English

I would like to apologize for the checker issue with problem C. I selected std::ncmp out of habit and forgot to change it afterwards. I would also like to apologize for taking so long to fix the issue. The model solution for div1A was also wrong, and I decided to fix that first. Nonetheless, we still hope that you enjoyed our problems in both Div. 1 and Div. 2.

103503A — Make Sum Great Again

Author: Gheal

Hint 1
Hint 2
Hint 3
Hint 4
Solution
Code (Gheal)

103503B — Binary Search Search

Author: Gheal

Hint 1
Hint 2
Solution
Code 1 (Gheal)
Code 2 (tibinyte)

103503C — Plates

Author: Gheal

Hint 1
Hint 2
Solution
Code (Gheal)

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By Gheal, history, 6 months ago, In English

Disclaimer: This contest is not rated

Hello Codeforces!

We would like to invite you to the training round of Infoleague Winter 2021, starting from Saturday, December 4th at 14:00 GMT.

This contest will have 8 problems, which are not sorted in increasing order of difficulty. They should provide an interesting challenge to everyone up to around 2300 rating.

The scoring system is IOI-esque, with partial feedback. All problem statements will be available in English.

Problemsetters: Gheal, tibinyte, cadmiumky

Testers: andrei_boaca, IacobTudor, RaresFelix

Upd 1: Six days down, one to go! The editorial will be posted tommorrow, shortly after the end of the round.

Upd 2: The contest is over, congratulations to the winners!

  1. Alfnov and AlexLorintz with 800 points
  2. sansen with 700 points
  3. MoRanSky with 620 points
  4. Kira_1234 with 605 points
  5. Egor and xiaolaogou with 565 points

Thank you to everyone who participated! The editorial can be found here.

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By Gheal, history, 6 months ago, In English

Hello Codeforces!

We would like to invite you to the second round of Infoleague Autumn 2021, on Saturday, November 20th at 15:30 GMT.

This contest will have two divisions, Div 1 and Div 2. In both Div 1 and Div 2 you will have to solve 3 problems, which should hopefully be sorted in increasing order of difficulty. Div 2 is recommended for specialists and below, while Div 1 is recommended mainly for experts and low CMs.

Contest links: Div 1, Div 2

  • Contest duration (Div 1): 4:00h
  • Contest duration (Div 2): 3:00h
  • Scoring distribution (Both divisions): 100-100-100

The scoring system is IOI-esque, with partial scoring. All problem statements will be available in both English and Romanian.

Problemsetters: Gheal, tibinyte, cadmiumky

Testers: andrei_boaca, IacobTudor, RaresFelix

Upd 1: The Div 2 round is over! Congratulations to the winners!

  1. iulianarsenoiu — AK in 18 minutes
  2. vulpes2 — 300 points
  3. Ausmosian — 205 points
  4. merlin_ — 200 points
  5. alexkrunker — 200 points

Also, congratulations to the first solvers of each problem:

Div 2 Editorial: https://codeforces.com/blog/entry/97107

Upd 2: The Div 1 round is over! Congratulations to the winners!

  1. iulianarsenoiu — 300 points
  2. Pety — 280 points
  3. AlexLorintz — 210 points
  4. maghrabyJr_ — 200 points
  5. lukameladze1 — 180 points

Also, congratulations to the first solvers of each problem:

Div 1 Editorial: https://codeforces.com/blog/entry/97108

Big thanks to everyone for participating! We would love to see you again at our next rounds!

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