doggies: here is my code:

fun main() {
    readLine()!!.toInt()
    val doggies = readLine()!!.toCharArray().groupBy { it }.mapValues { it.value.size }
    println(if (doggies.any { it.value >= 2 }) "Yes" else "No")
}

(Also still wondering who came up with the idea to cheat the "pure breed committee" by recoloring the poor puppies...)

Are JB developers participating in the main contest? They will grab all the prizes 😏

Can I use Coroutines with multiple threads for my solutions?

Must-read intro: https://kotlinlang.org/docs/tutorials/competitive-programming.html Here is a bunch of helper input reading functions that extend those examples for reading different types, lists and arrays, etc: https://stackoverflow.com/questions/41283393/reading-console-input-in-kotlin Hope that in some future Kotlin release stdlib would comprise something similar in addition to sole readLine().

I keep timing out on Division and Union. Does anyone know what this line means?

To optimize testing process you will be given multitest.

I see that we're given all test inputs in a single batch, not sure if we're meant to parallelize our code based on that?

📣 Today, at 15:35 UTC Codeforces hosts a regular Round 562. It has slightly different rules and harder problems but you can also use Kotlin to get some fun and additional practice. http://codeforces.com/contests/1168,1169

Codeforces does not supply the tests' input for us to check, right?

Are there some plans to make more Kotlin competitions with T-shirts and

fun

in the future for those who can't participate today? ☺️

Hi, I am trying to submit code to a test problem to check if everything works. When I select submit-code tab in the practice problem, I got a pop up on bottom right saying “You should be registered for the contest to be able to submit”

Gave this a go but it's not been much fun. 3/4 problems my solutions work but exceed time or space limits. One mysterious runtime error that I can't see the input for. Good luck everyone else.

How does one redirect input to a kotlin program? I want the equivalent of this, so that I can try out my code locally https://stackoverflow.com/a/54084856

edited: moved the question to [Thread] E

@SerVB can you link to your solutions for B-D? I never got those through the tests ;_;

[Thread] A

[Thread] B

[Thread] C

[Thread] D

[Thread] E

[Thread] F

[Thread] G

[Thread] H

[Thread] I

🎉 Thanks everybody for participating! It was a great competition. Please, use Slack threads for problem discussions. Author’s editorials will be soon published on codeforces. Note that they are quite technical for more complex problem (it is Ok if you don’t understand them — it takes practice). I’ll do a separate write up on easier problems.

You can watch winner's solutions 🙂

Anyone wants to debate about Longest Saw ?

Anyone have some suggestion for

D. Divide by three, multiply by two

?

Hi folks, how do we know who got the T-shirt?

@elizarov do we get any email regarding the shipment of the shirt ? I didn’t know about the address on the codeforces I just updated the with my address.