Does CF allow someone who cheated (https://codeforces.net/blog/entry/120675) and never showed remorse for his actions to author contests? What I want is not that he shouldn't author contests ever, what I want is for him to apologize publicly and say that what he did was wrong, and maybe return the 2 TON he got from cheating.

he's completing school years in reverse order — won't graduate until 1st grade

https://en.wikipedia.org/wiki/Ad_hominem

1933 != 2200

Ok cheater

So you mean you've also violated codeforces rules and have another account right?

China's team：

• Zhou Kangyang (orzdevinwang)
• Guo Yuchong (Kubic)
• Huang Luotian (MagicalFlower)
• Shen Jiyu (PubabaOnO)

Good luck to them！

I feel bad that qwerasdfzxcl didn't make it.

The perception among the top contestants is generally that using alts is not a bad thing, and I kind of agree with it (although Mike does not given that zh0ukangyang got banned, but that was probably a special case anyway, but I digress). It has a caveat though: You should never, and I repeat never, use two accounts in the same contest (obviously), which he has violated several times, and even worse than that, he has used two accounts in a contest with prizes, therefore effectively taking away one contestant's 2 TON.

Of course, you could argue: "Well 2 TON is chump change, who the hell cares?", and I agree yes, this sort of mindset does have a place in certain situations, but not in this one. Why? Well for starters zh0ukangyang got banned even though all he did was take 3000 measly internet points from other participants, so it stands to reason that a person who takes 2 TON should have some action taken against him. Also, without all of that stuff, like cheating = bad???? hello??? a person who cheats should not get away scot free, like that's what I believe, maybe other people might believe something different, but yknow I've spoken my piece I guess

dramaforces

What is your codeforces account's password ?

Argentina's team:

• Eduardo Carranza Vélez (Edu175) — 2nd time at IOI, 0 attempts left

• Bianca Vicente (biank) — 2nd time at IOI, 2 attempts left

• Juan José Läderach (SpecterByte) — 1st time at IOI, 2 attempts left

• Fabrizio Lautaro Brandellero (FabriATK) — 1st time at IOI, 0 attempts left

I recommend watching anime instead for the optimal skill boost

They brought guns to a fist fight.

meanwhile you are just a troll with no life

South Korea:

• Mingyu Woo (Mingyu331) — 1st time, 1 attempt left

• Heewoo Jung (heeew) — 1st time, 0 attempts left

• Min-chan Jung (mickeyjung) — 1st time, 2 attempts left

• Eunseong Kim (kes0716) — 1st time, 1 attempt left

Kazakhstan's team:

• Tsoi Maksim (shenfe1)
• Taimas Mansur (MnTm)
• Akhmet Issa (Issa)
• Serazүitdinov Nazar (Tima5)

I think we should hire you as our coach for the world final. You seem to know how we should train.

4 attempts left excluding this IOI? That's amazing. Congratulations and good luck to all of you!

Iran's team:

• Parsa Farajpour (ParsaDox) $$$-$$$ $$$0$$$ attempts left
• AmirReza Dorosti (Dorost) $$$-$$$ $$$0$$$ attempts left
• AmirAli Asgari (AmirAli-Asgari) $$$-$$$ $$$1$$$ attempts left
• AmirHossein Farkhondehfar (amirhoseinfar1385) $$$-$$$ $$$0$$$ attempts left

All of them are participating for the first time at IOI, we wish them the bests, may the code be with them!

As a tester, problems are:

It's kind of ambigious this time (clearly because 555 wasn't competing), because our commitee decided to choose the team with %20 National OI and %80 Team Selection Contest score for the first time this year. But CMS was incredibly bad on the first day of the National OI, and there were tons of people who suffered from not being able to get feedback and not being able to submit for long periods of time. (If you were lucky enough like me, you could also get the special treatment of "We're going to accidentally cut your Ethernet cable and stall you for the next 3 hours.") This %20 is going to be the deciding factor for the 4th member, and there are still no official results, so it's up to you to choose your 5th placer. You can look into the unofficial results from this sheet made by tolbi using all the AP Statistics knowledge we've acquired the previous week.

NeverCompromise is one of his alt's which he accidentally doxxed here

I believe that partaking in such an event before the competition might prepare you better for mishaps that might happen during the competition. You wouldn't want to get hit in the face while you're solving the final problem and not know how to recover properly. Remember, "everyone has a plan until they get hit in the mouth" — Mike Tyson.

Now, of course, getting hit in the face during the competition isn't likely, but I believe that training for such an occurrence is a more effective practice strategy than spamming out 1400-rated problems.

Hi! As a newbie tester I would encourage everyone to take part in this round and I would like to thank all the people who took part in organizing this round — especially prvocislo ! :D

Cuba's team:

• Camilo Triana Barata (CTB220406) — 2nd time at IOI, 0 attempts left.

• Marco Antonio Escandón García (Marco_Escandon) — 2nd time at IOI, 1 attempts left.

• Maité Morales Carreras (Maite_Morales) — 1st time at IOI, 2 attempts left.

• Francis José Rodríguez Ronda (SN0WM4N) — 1st time at IOI, 0 attempts left.

I don't know if the entire team will be able to travel.

United Kingdom's team:

• Hanks Chong (Hanksburger) — 3rd time, 1 attempt left
• Samuel Trajtenberg (sammyuri) — 2nd time, 0 attempts left
• Adavya Goyal (Boomyday12343) — 1st time, 2 attempts left
• Anango Prabhat (anango) — 1st time, 2 attempts left

As a tester, I enjoyed testing this round. Also, satyam343 orz

Spain's IOI team is:

• Alejandro Vivero Puga (Esomer) — 2nd time at IOI, 0 attempts left

• Javier Badesa Pérez (Dalek_of_Rivia) — 1st time at IOI, 0 attempts left

• Daniel Nieto Pérez (danx) — 1st time at IOI, 0 attempts left

• Héctor Verdeal Rodríguez (Hectorungo_18) — 1st time at IOI, 1 attempt left

Not you sir

at uni

Come on... releasing the checker and some tests after 10 days of the competition? +Extension

I did most of the work in the first week, and planned to do very little this week. Good luck with that plan now, right?

MikeMirzayanov Can you please tell why no action was taken against him despite him cheating in many contests using alt accounts, and he never apologized or showed remorse for his actions?

My post contest discussion stream where I will discuss all the problems

As a tester, I confirm!

As a tester, prvocislo TimDee and satyam343 put a ton of effort into this round. ORZ

romanticforces

How on earth have so many people solved COUNTRBS? My solution is to notice that at most one good RBS starts at each position (namely, it ends at the next occurrence of the same prefix sum if all prefix sums in between are greater) and hash all O(n) substrings, but I think the observation part is too hard for most 5* coders.

Feet_McYeet will win IOI 2024!

In PRISON it should be made more clear what to output when there are no prisoners or guarenteed that there is at lease one prisoner. I chose some random negative values and got WA first.

Sir, you can watch death note, It will definitely increase your skills of deception and give a boost to your intellectual abilities.

Using alts is still cheating anyway, cos you're still taking some rating from other people. If you want to be against cheating, be against it fully.

More bitset blogs coming soon.

As a tester I am afraid to say that I'm no longer a specialist to make this round special

If I may:
You're trying too hard. Seeing the difficulty of your solved problems, you're clearly doing fine, just, you're solving 1500/1600s when you should probably be focusing more on improving with 1300/1400s first.
Two things I'd suggest-
- Refer to this, (You can ignore the Topcoder section)
- Create virtual contests on vjudge consisting of 5-10 [Rating:Rating+300/400] questions and try to solve them in a window of 2-4 hours; this is similar to what's suggested for the 1900-2200 range in the blog above

Also, I saw that you're mostly upsolving the next-unsolved question from past contests, that's good. Keep it up 👍
In addition, once you hit Expert, consider building your own templates/referring to some standard ones, they do help (especially if you want to hit your target rating ASAP)
A couple for reference:
- Atcoder Library (Also, I highly recommend Atcoder Beginner Contests for learning, they're great)
- KACTL

As for hitting CM, can't comment as everyone's mileage varies, but seeing your practice, you should be hitting Expert soon, possibly by the end of this summer (even if not in rating, surely in skill level — confidently hitting Expert a few contests later)
Also, do read high rated contestants' code as that helps understand clearer alternatives for implementing ideas

Edit1: Rating fix
Edit2: Target Timeline, Others' code

rainboy orz

It had been solved already by Heap_OverFlow, but comment got removed due to some reason? Possibly, Heap_OverFlow reported some cheater, who reported heap's comments.

The soln that heap said and worked with the OP had been

updating the C++ standard in VS Code to C++11 or later, where the initializer list is supported.

Modify tasks.json to include the -std=c++11 flag (or a later version like -std=c++14, -std=c++17, etc.) when compiling your code.

Who on earth gave this guy the wrong info saying it's OK to be rude if you're CM?

This will also be the last contest of Taiwan's provincial team selection! Good luck to everyone competing for the last spot of Taiwan(Province of China)'s IOI team

As a tester, I tasted so you could enjoy. GLHF!

Well done prvocislo, I am looking forward to Friday :-)

Who is the greatest footballer of all time and why it's Messi?

Marinush His comments are more useful for the community than your retarded post and comments. It is you who needs to chill.

Also, you don't need to write your username in your every fucking comment. We can see your username with our own eyes. We are not blind either

I'll win.

shayan is awol lol

Boring Contest ever

Great Problemset. I learned alot.

Plz.start on 17:05(UTC+08) :<

I messed up guys. It was 7 and I wasn't been able to sleep yet. I decided to go to uni right away. Next frame, it was 12! I have no idea what happened since I even had my alarms on for 8.

I hope we'll have a chance to do this another time.

Feel free to downvote this comment. I messed up and deserve that.

As a tester, I hope the participants will enjoy solving the problems as much as I did. Also, satyam343 orz.

This will be my birthday contest :)

TimDee has neither silver medal nor girlfriend

This is a huge insult. I'm sure I'm not the only one who agrees with.

I don't know if I'm qualified to say this, but can't you be kind to other? Can't you at least be kind enough to not be sarcastic or insult someone who has nothing to do with you and has raised a legitimate issue?

This never happens again. But, definitely, I will share the channel with them.

Here is the brazilian team:

• Pedro Suyama Leston Rey (_rey)
• Arthur Lobo Leite Lopes (LoboLobo)
• Filipe de Souza Lalic (Lalic)
• Maria Clara Fontes Silva (clarinha)
• Pedro Henrique Assunção (hyakup)
• Caique Paiva (Pagode_Paiva)
• Carlos Cabral de Menezes Filho (Cabralbonzao)
• Leandro Marcos Checchio de Souza (leanchec)
• Fernando Graminholi Gonçalves (DereFer)
• Enzo Dantas de Britto Monte Araujo (Enzinho)

Good luck guys :D

I don't think they'd want to replicate the incident during the Turkish IOI camp....

As a loyal tester, I wish you all the best!

As a tester, I enjoyed testing this round.

Honestly, it doesn't matter. There is simply no reason why you should defend the guy.

thanks for the great contest! i really liked problem H.

It’s down now. What happened?

Macedonia:

• Vladimir Grchev(ZeoCool)
• Nikola Stojkovski(EntityPlantt)
• Marko Krenkov(mkkkkkkkk)

We don't have a fourth (yet) :(

In case you are talking about Permutation Cycle Queries.

This blog became more of an orz warks profile review than AMA!

When you die, would you rather not exist at all or have a 99% chance of going to heaven and a 1% chance of going to hell for eternity?

Why?
"Next, we calculate the expected sum as precisely as we can"
"//'Exact' answer based on Kahan summation"
Or, the Kahan is shown but the expected sum is really exact while testing?
Hope it is.

bump

LET'S GOOOOOOOOOOOOOOOOOOO

Do you recommend Blue Eyes Samurai? (I know it's not considered an anime in principle, but anyway)

Ricky Kaka

Italy:

• Luca Baglietto (BestCrazyNoob) — 2419.0 points (at the team selection tests), 2nd time, 1 attempt left
• Francesco Vercellesi (franv) — 2349.6 points, 2nd time, 0 attempts left
• James Bamber (jamesbamber) — 2303.6 points, 1st time, 0 attempts left
• Alessandro Lombardo (AlesL0) — 2257.0 points, 2nd time, 0 attempts left

You can write contest from only one account and you can only have 1 account.

Dyslexic Sparse University of Tartaria

No

This code is not working for negative values

This problem is solvable in $$$\Theta(N)$$$ via a greedy algorithm.

I don't like the idea of counting a compilation error as a submission. Still its not that bad, but counting in the rule of 1 minute pause is too bad. It can be so frustrating sometimes.

As a contestant, qwerasdfzxcl is handsome

I believe priority queue is better as it uses heap instead of a balanced BST, which makes it better in terms of time complexity(better as avl rotations have higher constant factor than extract max of heap) and space complexity(no need of pointer to left and right child as would have been needed in balanced tree for set).

Fuck it, it is 5:30 over here, we have to start in 3 hours and I couldn't sleep yet. I don't understand what is going on. I hope you haven't poisoned me guys.

Ice_man2.0 will win EJOI

I found the problem. It was on the 48-th line, because $$$j$$$ could be negative, which led to negative indexing.

I tried my best to divide the solution into reasonable parts, hopefully it'd be helpful.

P.S: It appears that there are some similarities between my sol and the sol above, which wasn't there when I started writing the comment.

tigranmatsak_9 will win EJOI2024

He goes by the name of Winner, There also a lot of other people who are master and candidate master in that group, sharing solutions, there is also another group by the id of codenichecp which solutions get shared if there isn't a collision with any other platform contests and the owner is awake

one of the problem will be interactive

As a participant, I wonder why the time has been changed. It would start at 17:05 UTC+8 on May 16th when I registered.

You create a vector of size 1e6 every test case. Since the number of the test cases may be up to 1e4, your code leads to TLE.