Hexagons's blog

By Hexagons, 4 days ago, In English

What is the value of $$$0^0$$$ (zero raised to the power of zero) in your opinion? and what is your intuition behind it?

  • $$$0$$$
  • $$$1$$$
  • Undefined value
  • Unspecified value
  • $$$e$$$
  • $$$π$$$
  • Something else

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By Hexagons, 3 weeks ago, In English

Thank you for joining the contest 😊.

How did you find the contest?
Which problem is your favourite?

A. SUNNY

Editorial

B. AUBREY

Editorial

C. HERO

Editorial

D. KEL

Editorial

E. MARI

Editorial

F. BASIL

Editorial

G. OMORI

Editorial

Feel free to provide any feedback or constructive criticism in the comments (For the problem ideas, problem setting, problem statements, the editorial itself, etc..) as it will be useful for me to create contests in the future 🙂 (Also if you don't mind, don't forget to upvote the blog, I want to be a top contributor for once in my life 🥺).

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Tutorial of OMORI CONTEST
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By Hexagons, 5 weeks ago, In English

Assalamualaikum (peace be upon you), Codeforces people 👋.

I'm glad to invite you to the mashup OMORI CONTEST which will be held inshallah on Thursday, October 17, 2024 at 19:30 (GMT+3).

You will be given 3.5 hours (210 minutes) to solve 7 cool problems in an ICPC-styled contest, themed about the videogame OMORI (Which is a great game that you might want to give a try). There will be exactly one interactive problem, so I suggest you should read the guide for interactive problems.

All problems have been written and prepared by me, Hexagons.

I would like to give a lot of thanks to:

  • MikeMirzayanov for the great codeforces and polygon systems 👍, without them I wouldn't be able to make the contest.

  • ismail-but-noob, 3mara, Mr.Pie, AhmedOsamaEzz, ahmedfouadnew, AbdelmagedNour for valuable testing and feedback, they made sure the problems were good enough and the test cases were strong 👏.

  • ismail-but-noob again, for helping me in preparing an interactor on polygon, without him there would be no interactive problem 😅.

  • OMOCAT, for creating OMORI ⭐.

  • yahia, for letting me play OMORI on his laptop 💚.

  • All my friends who supported me while making this contest 💓.

  • You for joining this contest 😊.

Good luck to all participants!

I Hope you enjoy the contest and have fun solving the problems 😊.

Update 1: Contest has been postponed to Thursday, October 17, 2024 at 19:30 (GMT+3).

Update 2: Registration has started!

Update 3: Editorial is out!

Update 4: Congratulations to the winners and first-solvers! 🥳 🥳

Winners

  1. Ahmed57

  2. k1r1t0

  3. phsads

  4. Anonymous_Noob

  5. askd

  6. Intellegent

  7. wltt

  8. AliRagab313

  9. anfanite396

  10. methanol

Honourable mentions: is-this-dp, line.

First solvers

A. SUNNY: phsads
B. AUBREY: Anonymous_Noob
C. HERO: N/A
D. KEL: Adam.Aly
E. MARI: methanol
F. BASIL: line
G. OMORI: ho-oh

Update 5: Contest has been added as a gym.

Q&A:

Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
Q9
Q10
Q11

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Announcement of OMORI CONTEST
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By Hexagons, 6 weeks ago, In English
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By Hexagons, 7 weeks ago, In English

In case someone didn't notice yet, I am making a CF contest not a CF round, just a mashup/gym like other famous mashups you might have seen like Theforces / Mathforces / CPC stuff / .... etc.

I am making a contest with stories based around the videogame OMORI, I intend to make it a 7-problem ICPC-style contest, I have currently finished $$$4$$$ of them.

What do you think would be the best time duration for the contest?

  • $$$3$$$ hours
  • $$$3.5$$$ hours
  • $$$4$$$ hours
  • $$$4.5$$$ hours
  • $$$5$$$ hours

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By Hexagons, 10 months ago, In English

Ascended/Radiant Markoth is a really terrifying boss in hollow knight, and has caused grief to many players trying to beat him on radiant difficulty, so I wanted to share this blog so that it may reduce the suffering and ease defeating this boss

Tips to defeat Markoth on radiant mode :

1. Charm build :

  • Gubberfly's Elegy : really useful for attacking him while avoiding the dreamshield

  • QuickSlash : for improved hit rate

  • Mark of Pride : for improved range

  • Steady Body : to avoid recoil just in case

  • Fragile/Unbreakable Strength : for extra damage

    Charm Build

2. Strategy/Tactics :

  • During nail barrage prioritize survival over dealing damage, but attack if possible to deal safe hits

  • Best opportunity to attack is when he is spinning his dreamshield

  • Try not to jump in the air too often as there is no ground to stand on, and you can fall off platforms easily

  • Try to tank much damage when he is spinning his sheild right before his second phase, to shorten its duration

  • Critically prioritize survivng during the nail barrage in the second phase

  • During his dreamsheild-spin attack in the second phase, wait until a radial gap appears between the orbits of both dreamshields, and attack from this gap

    Markoth Himself XD

3. Prerequisites :

  • Would recommend doing path of pain first to get used to the ascended arena

  • Would recommend doing Xero (to get used to semi-floorless arenas too) and Soul Tyrant on radiant to get used to homing projectiles

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By Hexagons, 17 months ago, In English
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By Hexagons, history, 2 years ago, In English

Do you prefer Bedrock Edition or Java Edition? And state reasons for your choice.

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By Hexagons, 2 years ago, In English

What is the hardest non-boss common mob to defeat in minecraft?

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By Hexagons, history, 2 years ago, In English

What happened to sparky? he stopped blogging since mid-2022 I think, Is his account somehow shadow-banned or blocked from blogging? (he can still write comments)

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By Hexagons, 2 years ago, In English

Is it subjective on which is better, or is it something objective by codeforces?

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By Hexagons, 2 years ago, In English

Whenever I start counting the CF Tags I know one by one, Geometry Always comes almost the last, I think it is very unpopular on CF aswell.

Geometry problems, add more geometry problems
I have seen a lot of great adhoc ideas be used in several topics and tags, but geometry and some others occurred very rare, I think trying to take advantage of such uncommon ideas may help in getting ideas for problems.

I have noticed though that in the early years of codeforces some really good geometry problems were proposed, I think it will be cool to revive this era.

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By Hexagons, 2 years ago, In English

I am sure you already know the infamous Sparky_Master_WCH1226, he is the highest rated troll account, I am now asking for something related to that, is there a list of the top 10/100 troll accounts by rating?

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By Hexagons, history, 2 years ago, In English
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By Hexagons, 2 years ago, In English

### Error 404, Not Found ### Error 404, Not Found ### Error 404, Not Found ### Error 404, Not Found ### Error 404, Not Found ### Error 404, Not Found ### Error 404, Not Found ### Error 404, Not Found

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By Hexagons, 2 years ago, In English

The cow in the "Perhaps" meme is actually smiling :O

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By Hexagons, 2 years ago, In English

Codeblocks

VS Code

Sublime

CP Editor

VIM

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By Hexagons, 3 years ago, In English

Define a function $$$s(n)$$$ (where $$$n$$$ is an integer) which returns the successor of the integer $$$n$$$

Define another function $$$f(a,b,k)$$$ such that $$${a,b,k}$$$ belong to integers, $$$f(a,b,0)$$$ = $$$s(s(s(.....s(s(a))......)))$$$ (call function $$$f$$$ on $$$a$$$ for $$$b$$$ times), and $$$f(a,b,k)$$$ = $$$f(a,f(a,f(a,.......f(a,f(a,b,k-1),k-1),k-1),......),k-1)$$$ (call function f such that the second parameter b is this function nested b-1 times and the third parameter is k-1)

It can be shown that $$$f(a,b,0)$$$ = $$$a+b$$$, $$$f(a,b,1)$$$ = $$$a*b$$$, $$$f(a,b,2)$$$ = $$$a^b$$$, and $$$f(a,b,3)$$$ = $$$a↑↑b$$$ (Tetration symbol)

Any thoughts about this function and the best different complexities to calculate it in terms of $$$a,b,k$$$ in preprocessing and the call of this function?

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By Hexagons, 3 years ago, In English

You are given a hexagon in which all his angles are equal in measure, you draw a circle inscribed inside the hexagon and tangent to the hexagon's sides, and another circle which is the circumscribed circle of the hexagon (all the hexagon vertices lie on the circumference of this circle), suppose the side length of the hexagon is $$$X$$$, find the area of the ring between the two circles in terms of $$$X$$$.

The ring in yellow is the required ring


BONUS : Find a general solution in terms of $$$N$$$ and $$$X$$$ (where polygon $$$P$$$ is a regular $$$N$$$th-gon of side length $$$X$$$ each) for the area of the ring between the circle inscribed in $$$P$$$ and the circle $$$P$$$ is inscribed in

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