Greetings Codeforces!
First things first, we would like to thank everyone who participated in the previous nine Kotlin Heroes competitions: Episode 1, Episode 2, Episode 3, Episode 4, Episode 5: ICPC Round, Episode 6, Episode 7, Episode 8 and Episode 9.
Kotlin Heroes is a great way to play around with Kotlin’s features, learn something new, and practice using the language by solving fun problems. It is great for programmers of any level!
We invite you to join the practice round, where you can improve your algorithmic problem-solving skills and complete training problems. In this round, all the solutions are open and you can request hints if you’re stuck.
Here are some things you can do to help you refresh your knowledge of Kotlin and learn more about competitive programming while you practice:
- Review our Kotlin solutions for the Advent of Code algorithmic puzzles.
- Read our competitive programming tutorial.
- Watch the videos from our Kotlin in Competitive Programming YouTube playlist.
- Look at the problems from the previous practice rounds.
On May 13, 2024, the real challenge begins! Kotlin Heroes: Episode 10 will last 2 hours 30 minutes and will feature a set of problems ranging from simple ones, which are designed to be solvable by anyone, to some really tricky ones for seasoned competitive programmers.
You can solve Codeforces challenges directly from your JetBrains IDE using its smart features. Just enable the JetBrains Academy plugin and follow the instructions in the Getting started with Codeforces guide.
Prizes:
The top three winners will receive cash prizes of $512, $256, and $128 (or rewards of equivalent value), respectively. The top 50 participants will win a Kotlin Heroes T-shirt and an exclusive Kotlin sticker, and all competitors who solve at least one problem will be entered into a raffle for one of 50 Kotlin Heroes T-shirts.
Please note that we are not able to ship prizes to any country, state, province, or territory subject to comprehensive OFAC sanctions, including Belarus, Cuba, Iran, North Korea, Russia, Syria, or the Crimea, Donetsk, or Luhansk regions. To see the list of sanctioned countries and regions, please visit this page.
Best of luck to everyone!
Can you pleese make problems upsolvable with any languages? Many of times there is a well written problem. Only to find: can only submit in kotlin language. Understandable during the contest, but during upsolving?? Why??
That would be a great idea. But as a help u can use online code converters from Kotlin to any other language. (looks like people are really hating helpful comments)
Will the Kotlin Heroes episode 10 be rated ?
Sadly probably no, no Kotlin Heroes Contest was rated. But yes it would be nice to have it rated.
why the round is postponed by 2 hours
A Syrian Contestant take sanctions seriously:D
is it allowed to translate our code to kotlin through chat gpt or something?
no
i did that for kotlin keros 9 and got a shirt, but just note that chatgpt isnt 100% accurate so I wasted 10 mins debugging some hallucination
Good luck everyone.
Yo, why chat gpt cant change code from c++ to kotlin, for a bit complex code ai tools fail and what's even the purpose of kotlin only contest. Complete nonsense imo
it's fun
50 t-shirts will be randomly distributed to those who solve at-least 1 problem? right?
why only kotlin????
одни русские по английски объясняют другим русским что им не положены футболки :yawning_face:
Contest is clashing with GT vs KKR ipl match, please postpone.
bro boring match
Lmao what match ?
What about adding JetBrains IDEs licenses to the list of prizes? It sounds like a good opportunity to market your IDEs in addition to Kotlin itself among competitive programmers. At the same time that will increase prize pool at no cost which would likely help to get more people interested.
Should this post appear on https://codeforces.com/kotlin? Some of the posts for episodes 1-9 appear there.
This Submission is giving a TLE on test 9 but the complexity is $$$O(N)$$$. Am i doing something wrong in the implementation?
Upd : Got AC on Kotlin 1.9
i don't participation because i live in syria so i can not get a t-shirt look at me code force don't send us anything but please don't, ban code force from syria
wish luck for all participants
In Russia T-shirts ships you my frend
List<T>.splitwhenMy second time participating Kotlin Heroes with 4 problems solved and D in the last (two) minutes!
The problems are really nice and it's fun to play with the syntax, hope the other rating contests can bring such excitement. Thanks AtCoder Custom Test as my Kotlin compiler!
Thank you guys for the cool contest!
Thank you for participation! We hope you enjoyed the problems.
The editorial is currently unfinished, you can view the partial version here (all problems except H and J). We will post the full editorial on CF tomorrow.
And some of mine tester's solutions while editorial is still in progress can be checked here.
i think F.kt and G.kt should be swapped
Thanks, fixed.
will there be a live raffle draw or will it be only mailed to the winners?
weak tests H
will there be an explanation for the solutions of the problems ?