Does CF allow someone who cheated (https://codeforces.com/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

We can do that after the world final. Before that, we all need each other in a healthy state.

Azerbaijan's team:

• Fuad Garayev (fuad720)
• Huseyn Agayev (Huseyn123)
• Aykhan Damirli (dmraykhan)
• Tahir Aliyev (Tahirliyev)

Brazil's team:

• Pedro Rey (_rey) — 2nd time at IOI, 2 attempts left

• Arthur Lobo (LoboLobo) — 2nd time at IOI, 0 attempts left

• Felipe Lalic (Lalic) — 1st time at IOI, 0 attempts left

• Maria Clara (clarinha) — 1st time at IOI, 4 attempts left

Türkiye's team:

• Efe Güngör (efex12)
• Teoman Ata Korkmaz (tte0)
• Yunus Emre Artal (PieArmy)
• Mustafa Selim Özekinci (meLearnCode)

I hope erray gets the right color this time.

1933 != 2200

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

Instead of doing all that, you should run around with sticks and hit each other and see who is the last one standing. I believe that Shayan would win and it wouldn't be close.

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

owoovo_shih will win APIO 2024!

I feel bad that qwerasdfzxcl didn't make it.

What a strong team! Good luck going for Türkiye's 4th gold.

Why the mention date of tolbi is newbie, his max is international master?

What is your codeforces account's password ?

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

PieArmy will win EJOI 2024!!!

I recommend watching anime instead for the optimal skill boost

I think that the problem is that till now not so many countries have held selections i.e Ukraine selections camp will start only in a 2 days

who became fifth at TST? wondering about the 5th place curse...

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.

Username checks out

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, I enjoyed testing this round. Also, satyam343 orz

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

Kyrgyzstan Team:

• Ian Bobrus (yanb0) — first time at IOI, 3 attempts left

• Alihan Aidarbekov (Alihan_8) — second time at IOI, 1 attempts left

• Abdulaziz Lebiev (Relice) — first time at IOI, 1 attempts left

• Baytoro Mairambekov (Baytoro) — second time at IOI, 0 attempt left

(Can be one more attempt, the government has extended the school education system by one year)

Kazakhstan's team:

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

Nummer_64 will win IOI2024!!

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

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

China's team：

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

Good luck to them！

As a tester, problems are:

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

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

I was born in December 2008 ((((

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

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.

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

All 0 attemts left :)

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.

As a tester, I confirm!

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.

romanticforces

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.

Feet_McYeet will win IOI 2024!

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

rainboy orz

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

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

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

I think the term "contiguous memory locations" clearly points to the memory location and for int data type in an array, 1024 and 1028 are considered contiguous. But for a BST, nodes allocated on the heap aren't on contiguous memory locations.

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

More bitset blogs coming soon.

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

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

Yes. There can be, but in general, in all of these olympiads, there is a fairly large reliance on sportsmanship or self honesty, like the team leader of any team gets the problems a lot earlier in both IOI and IMO (I don't know about other olympiads, but at least for these two I do know for sure), and if they want to, they can pretty easily share it with their team. But this obviously goes against the spirit of the olympiad (and in fact, I think for most countries, even if the team leader did that, no student would be willing to cheat), so like there's not a huge reliance on fully cheating proof regulation. Of course, they try their best, but in the end, it falls to the participants themselves to uphold the spirit of the olympiads.

you should have gone for the head .

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.

Boring Contest ever

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

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?

Ok cheater

Yes, he need stop, it is already written at the pilot course policy that,

You confirm that you will not in anyway distribute solutions

Nah you'd win

Azerbaijan's team:

• Ahmed Gambarli (coolboy19521)
• Hasan Valiyev (Hasanv)
• Muhammedali Ahmadov (suleymancakir)
• Vagif Seyidzada (Hugs-From_adicto)

it's unfair :(

bump

LET'S GOOOOOOOOOOOOOOOOOOO

I don't think there are SIMD instructions that can be usable to directly compute 128-bit values, at least on x86-64. For example, there's no instruction that compute "add with carry" which is necessary to compute 128-bit additions.

As I've shown in my experiment, GCC actually generates two adding instructions for a 128-bit addition (on x86-64). I tried various compile options but the compiler did not use SIMD at all. Similarly, a 128-bit multiplication expands to 3 multiplying instructions and 2 adding instructions, and a 128-bit division even becomes a library function call. It might be possible to use SIMD on bitwise operations, but GCC doesn't use SIMD for them, either. See this assembly output in Compiler Explorer.

True, I was thinking specifically for bitwise operations, where the fact that SIMD is packed multiple data doesn't matter. There's no bitset addition in principle.

Note that even some seemingly "elementary" bitset operations must be split into multiple assembly operations. Typical example: shifts, a massive pain in the ass to implement correctly.

☠️

No

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

In case you are talking about Permutation Cycle Queries.

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.

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

This will be my birthday contest :)

plot twist: he was downvoting

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

This code is not working for negative values

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

The problems can be solved on Eolymp.

I hope NeroZein doesn't clown like he did in TST day 2

orz amin_2008

Macedonia:

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

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

one of the problem will be interactive

Looks very same 260365761 260366342

:(

This year's APIO judging has been moved to qoj, so I think the situation might improve significantly

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.

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

Fikrat_Asadzadeh.

Why would they not want a chance to win world finals?

(Note that according to my calculations this strategy has also a 20% chance of death so I guess it's not that advisable)

My KMP passed by memoising it 260210442

Why is the time changed? I remember it started from 17:00 UTC+8

your rating: 3/2 th is my dream.