AlperenT's blog

Editorial of April Fools Day Contest 2023
By AlperenT, 2 years ago, In English

Thank you for participating in our contest! We hope you enjoyed it.

Please let us know what you thought of the problems by voting!

1812A - Are You a Robot?

Idea: ToxicPie9
Preparation: flamestorm

Hint
Solution
Video Editorial
Feedback

1812B - Was it Rated?

Idea: BucketPotato
Preparation: BucketPotato

Hint
Solution
Feedback

1812C - Digits

Idea: ToxicPie9
Preparation: ToxicPie9

Hint 1
Hint 2
Solution
Feedback

1812D - Trivial Conjecture

Idea: AlperenT
Preparation: AlperenT

Hint 1
Hint 2
Hint 3
Solution
Feedback

1812E - Not a Geometry Problem

Idea: ToxicPie9
Preparation: ToxicPie9

Hint
Solution
Feedback

1812F - Factorization

Idea: flamestorm
Preparation: flamestorm

Hint
Solution
Feedback

1812G - Colour Vision

Idea: flamestorm
Preparation: flamestorm

Hint 1
Hint 2
Solution
Feedback

1812H - Expected Twist

Idea: ToxicPie9
Preparation: ToxicPie9

Hint 1
Hint 2
Solution
Feedback

1812I - Mountain Climber

Idea: Ari
Preparation: Ari

Hint
Solution
Feedback

1812J - Unmysterious Language

Idea: ScarletS, ToxicPie9, et al.
Preparation: ToxicPie9, ChatGPT

Hint
Even Bigger Hint
Solution
Feedback
  • Vote: I like it
  • +163
  • Vote: I do not like it

Comments Comments (28)
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2 years ago, # |
  Vote: I like it +54 Vote: I do not like it

I knew what I was doing clicking on the "Video Editorial" link. Was not disappointed)

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2 years ago, # |
  Vote: I like it -11 Vote: I do not like it

Another guessforces round? Come on codeforces

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2 years ago, # |
  Vote: I like it +45 Vote: I do not like it

F: https://www.dcode.fr/prime-factors-decomposition did the trick :)

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2 years ago, # |
  Vote: I like it +59 Vote: I do not like it

There is another way to solve problem F

Spoiler
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2 years ago, # |
  Vote: I like it +7 Vote: I do not like it

the best contest i have ever done!

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2 years ago, # |
  Vote: I like it +44 Vote: I do not like it

There were some who solved B in another way. 2015 is the only year that did not have an April Fools round, and 2020 and 2021's rounds had a problem "Is it rated?" and the answer was a clear NO. In other years it's just YES

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2 years ago, # |
  Vote: I like it +1 Vote: I do not like it

I was 168th on contest to first time WOW

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2 years ago, # |
  Vote: I like it -16 Vote: I do not like it

is it rated ? was it rated ? Guess the next....

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2 years ago, # |
  Vote: I like it -39 Vote: I do not like it

problems are tarsh el tarsh

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    2 years ago, # ^ |
      Vote: I like it +11 Vote: I do not like it

    Is your profile picture yourself?

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2 years ago, # |
  Vote: I like it +27 Vote: I do not like it

Using Ai as jury was amazing, Is it possible to see new problems based on that ?

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2 years ago, # |
  Vote: I like it +16 Vote: I do not like it

Thanks to all authors for very good contest, every problem is genius, and my favourite one is $$$H$$$. By the way, does anyone know, is there any website or something for competitions like April Fools Day Contest? From year to year I like this contests more and more, will be cool to participate in something like that more often than 1 time in a year

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2 years ago, # |
  Vote: I like it +7 Vote: I do not like it

In problem G, is the green really #01722B? I find it is #007327.

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2 years ago, # |
  Vote: I like it +16 Vote: I do not like it

Anyone else who thought B meant the last 25 contests? Coincidentally, the 15th contest (counting from the most recent) actually was unrated...

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    2 years ago, # ^ |
      Vote: I like it 0 Vote: I do not like it

    I think so too... actually the 25th contest (counting from the most recent) was also unrated and n<=25, so I thought it was the right approach.

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2 years ago, # |
  Vote: I like it 0 Vote: I do not like it

I wish every other were also this easy!!! :D

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2 years ago, # |
  Vote: I like it 0 Vote: I do not like it

My whole contest experience was terrible due to the internet problems. And for problem B when I went to check whether the 25 rounds rated, codeforces told me 'The page is temporarily blocked by administrator.' :(

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    2 years ago, # ^ |
      Vote: I like it 0 Vote: I do not like it

    I thought it was made on purpose. I tried API, didn't work as well. I had to use Wayback Machine...

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      2 years ago, # ^ |
        Vote: I like it 0 Vote: I do not like it

      All right, I had never heard of it, but I have now. Thx~

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23 months ago, # |
  Vote: I like it +1 Vote: I do not like it

best contest!!!!!

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22 months ago, # |
  Vote: I like it 0 Vote: I do not like it

I solved Problem D — Trivial Conjecture by finding the number. Submission: 200174057

The one I used is: 274133054632352106267

I found it on an obscure site linked on a github page. I don't actually know how long the sequence is though, since the site only cites the biggest number reached. Here being 56649062372194325899121269007146717645316.

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12 months ago, # |
  Vote: I like it 0 Vote: I do not like it

not the rickroll...lmao

→ Reply