Recently Türkiye's team selection for EJOI has ended and I love EJOI so I thought why not make the EJOI teams blog of this year?
9th edition of EJOI will be held in Bulgaria, Shumen from August 29 to September 4, 2025. Official website has been announced.
LIVE RANKINGS: results.ejoi.org
Result of both days combined: results.ejoi.org/standing/Day1,Day2
USERNAME: results
NEW PASSWORD: results
You can check the results of the previous EJOIs in this site.
Here is the Türkiye team and their codeforces handles:
Efe Gürkaş(EfeG)—1st time at EJOI, 0 attempts left
Osman Eymen Karaoğulları(osmiyum)—1st time at EJOI, 1 attempts left
Onur Ocak(theheatcoder)—1st time at EJOI, 0 attempts left
Yiğit Yenmez(yigit11)—1st time at EJOI, 0 attempts left
If you let me know your country's team, feel free to comment it with the same format and I will add it to the table!
About yigit11, we both got the same score, the national committee should favor the young ones (I'm technically not 12 yet, still have 5 days to turn 12 :D) to encourage future pursuits, or at least as a birthday gift IMO :D (just kidding)
Couldn't the national committee allow both of you to participate in regional Olympiads? As far as I know, Turkey is planning to send a team to the Junior Balkan Olympiad in Informatics — See this document (in Turkish), page number 12. You could be in one team and he would be in the other. Yiğit doesn't have any further attempts left to participate in EJOI or other junior Olympiads in informatics, while on the other hand, all the things you've achieved at this age are commendable. Therefore I'd say that this sounds like a fair option.
This could be a good option, thanks for the support :D
For EJOI selections, National comittre used the second contest as tiebreakers last year, so maybe that might be why.
And happy birthday Kıvanç!!!
Thanks :D
Also, good luck with TST and hope first day went well :D
Kıvanç sir you are basically guaranteed to get ~4 IOI medals and 2 EJOI medals. Let them win for once lmao. Kıvanç Tok orzosity
you are true :p he won 2 national medals (one of them is gold) and he has 2 more attemps
Thanks for your motivating words :>
.
They announced it during the closing ceremony of EJOI 2024.
They told us at the national competition that Azerbaijan cancelled and EJOI is being held in Kazakhstan instead
Alright then I will update it when it is announced officially, thank you! Izho is a really good olympiad so I am looking forward for EJOI 2025!
Are you sure that it will be in Kazakhstan? Last I heard they were considering it but didn't know if they had enough money?
Our country's team leader said it's in Kazakhstan, we didn't get any news on the location changing since. I mean, I can't go to EJOI anymore but I know people who are going to the team selection next week
Bro will you be a team leader?
It remains to be seen.
Macedonia:
-Vladimir Grchev VladiG (0 tries left)
-Marko Krenkov mkkkkkkkk (0 tries left)
-Zoran Ilijoski ZoranIlijoski (1 try left)
Same as last year, currently there is no confirmed 4th team member, I will reply to this comment if there are any updates.
wtf strong
Thank you, looking strong! Can you add the xth time at EJOI information for the 4th participant in case people wanna know? For current ones
Vladimir Grchev, 4th time at EJOI (WOW)
Marko Krenkov, 2nd time at EJOI
Zoran Ilijoski, 1st time at EJOI
If I'm not wrong
Yes you are correct, also its not great if I have 3 EJOI participations if I have only 1 medal :(
Bro will you add us to the list?
I was waiting for the fourth member but I can add rn wait
I have added you now
Any updates on 4th member?
Jakov Grujovski, first time at ejoi, 1 try left but i couldnt find his cf account, i messaged him but im waiting for a response
nvm found him JakovG
Oh ok
Alright thanks! I will be waiting
.
No but I am gonna ask a friend who will be competing to let me know when our national comittee tells them.
Poland team on oij.edu.pl
SzymonKrzywda
Zbyszek99 <- gold on BOI
Filip1221
ArturSmolenski <- Bronze on BOI and he is in the polish representation for IOI
Alright, adding them to the list!
Simon Krzywda, 1st time at EJOI
Krzysztof Witkowski, 2nd time at EJOI
Filip Pawicki, 1st time at EJOI
Artur Smoleński, 2nd time at EJOI
If I am not mistaken, and could you write how many attempts left for each participant if you have the information?
Everyone has 0 attempts left
So we must have 4 golds
How often will you update avg rating?
Every time a new team entry is made
Strong …
I had a wrong strategy on day 1 so i got a bad result... Btw,in the winter camp of Türkiye, I was the one of two guys who have two more attemps for the national team selection with onepersonintheuniverse .Can somebody tell me that how big is my advantage on national team selections in next years?
In my opinion it is very doable for you if you study well and dont slow down. meLearnCode met olympiad when he had only one year left for EJOI and he got in the team that year. Also all the people currently in the team will be gone in your last year.
Thanks for support and I wanna ask another question.It looks like that if you are in the national team,you are guaranteed to be in the summer camp next year, if it is true is it also works for 9th graders (which is going to high school contest next year) i dunno it so can someone please answer this too, I'm all ears :p
Yes thats how some people passed last year from the EJOI team
EJOI will be held in Shumen, Bulgaria from August 29 to September 4 (An official invitation has been sent, I think)
How you know that? You have invitation?
I was told by a teacher, I think they sent the announcement to all the countries that participate. There's no official site yet, so teams can't register, but this information is official.
If I have more information, I'll add it to my blog.
I have just asked last polish team leader and he said that is truth
Serbia received it as well. So it's almost for certain that it is indeed in Shumen.
EJOI site: https://2025.ejoi.org/
Thank you so much!
Azerbaijan:
Əkbər Əhmədov(Ekber_Ekber) — 1st time at EJOI, 0 attempts left
Atilla Mustafa(_atilla_) — 1st time at EJOI, 0 attempts left
Ömər Əliməmmədzadə(tooourist) — 1st time at EJOI, 0 attempts left
4th participant will be determined after APIO
UPD: 4th participant from Azerbaijan was finally selected:
Fateh Əhmədzadə(AzeTurk810) — 1st time at EJOI, 0 attemps left
Good luck to everyone participating at EJOI2025!
Added!
Here is the Georgian team:
Mate Rekhviashvili (materekh) — 4th time at EJOI (WOW), 0 attempts left
Saba Goduadze (saba_goduadze) — 1st time at EJOI, 0 attempts left
Giorgi Maisuradze (giorgi123glm) — 1st time at EJOI, 0 attempts left
Aleksandre Peikrishvili (Sandropeikrishvili) — 1st time at EJOI, 0 attempts left
Hey you stole my (WOW) thats copyrighted material
sorry, didn't mean to copy directly :D
Bro 4th time at EJOI is wild materekh orz
Croatia:
Borna Gudac bornag (2nd time, 0 attempts left)
Gabriel Kos gkos (1st time, 1 attempt left)
Gita Radiković Plavac52431 (1st time, 1 attempt left)
Ozren Vili Paunović Vili1234 (1st time, 0 attempts left)
I wish everyone good luck!
Mijo Novak will win EJOI 2027!
Added!
Carrot says my rating is gonna increase by 2 so keep that change in mind
Ahaha dont worry I was planning on changing every team who participated in the last contest.
Last year I was dying to wait for EJOI blog to update so it would show Master instead of Expert so I will do my best this year >:)
Ekber_Ekber will win EJOI 2025! I am proud of having such a classmate!
We will see ;) (Azerbaijan is not on the top of table, see who is)
I don't think it matters. Anyways, good luck!
You haven't seen the power of the Azerbaijani team yet)
I will win EJOI trust
A aell naw
Not if I win first (i wont xd)
dssfsuper2 will win EJOI 2025 !
Do you know who is in French team?
Cyprus:
Are there any more information about Andreas? Cf handle and how many attempts left?
I'll add it as soon as I know
Updated (PieArmy)
Thank you!
Ekber_Ekber and tooourist will win EJOI 2025!
I got confirmation from organisers that they indeed will
You can be sure about that :)
Who is Azerbaijan's 4-th ?
It depends on you ;)
It is known by now :)
Congratulations, bro.I wish the best for you!
Thank u , bro
Of course...
_atilla_ and AzeTurk810 will win too!
All of we 4 will win
ahahahahahahahahahahaha
materekh will win EJOI 2025!
I don't think so..
yigit11 Our newbie gigachad
Ukraine
-Vladyslav Khalin farkon00
-Roman Sadovnikov TheFuturoma
-Andrii Kuzma Kuzma_A
-Vladyslav Vynnyk vValsi
Can you add how many attempts left for each participant?
Zero for all.
Everyone's first attempt too right?
Yeah
The last person for ejoi Azerbaijan team is AzeTurk810
:) , Yes , last and first attemt
Thank you and good luck! I will add you later I am not on computer currently
Thank for luck and oke
Finally added
Thanks
AzeTurk810 will win EJOI 2025!He really struggled to take part in this competition.
I can bet with anyone that ArturSmolenski will be in top 3 in this ejoi
Romanian junior selections ended today, here is our team for EJOI:
Andrei Nemțișor (andrei_n) — 1st time at EJOI, 1 attempt left
Horia-Andrei Boeriu (HoriaB) — 1st time at EJOI, no attempts left
Traian Mihai Danciu (trraian) — 1st time at EJOI, 2 attempts left
Matei Ștefan Iordache (iordache_) — 1st time at EJOI, no attempts left
Thank you so much!
🥇 🥇 🥇 🥇
iordache_ will win ejoi!
tvladm will win ejoi and bring glory to Faroe Islands!
Armenia Team:
Mamikon Hambaryan mamikonm1 1st time 1 left
Hayk Manukyan HMan26 1st time 0 left
Aren Grigoryan labaratory 2nd time 0 left
Vache Kocharyan BetaZero 1st time 2 left
places in list matches plases in team selection test places
Thank you and congratulations on 2nd place!
Thank You!!!
IMO is better than IOI and EJOI. Joking MMO is better xd.
Bulgarian first team:
Kiril Zulyamski kchu_z (2nd time at EJOI)
Martin Chavdarov GeneralRtivity
Boyan Boyajiev BFC_BAB
Daniel Todorov BauBauDani
No more attempts left for all of them. (They dont look very strong but dont underestimate them. They are at least very cute <3)
Why are they all unrated :(
Is it because their average this way is $$$\frac{0}{0} = infinite$$$?
Serbia:
Added!
Saudi's team:
Fares Alraddadi (STH6) — 1st time at EJOI, no attempts left
Hashim Basuni (Hashim_Bas) — 1st time at EJOI, no attempts left
Eyad Alkhalifa (Eyadooz1) — 1st time at EJOI, 1 attempt left
Ahmad Alhussain (Kokobird1) — 1st time at EJOI, no attempts left
:fire:
Kazakhstan:
Abilmansur Kurmet(Abilmansur-007) — 1st time at EJOI, 0 attempts left
Nurali Shaimerden(QazLon) — 1st time at EJOI, 0 attempts left
Sayat Yussupov(Arkanefury) — 1st time at EJOI, 0 attempts left
Dinmukhammed Mugzhan(Dibamboo) — 1st time at EJOI, 0 attempts left
I'm sure you will do as good as the last year's team!
Please update Polish Team or the top teams, because Artur Smoleński got master!
Ok I will update all of them. And please feel free to ask for an update whenever you want
mamikonm1 will win EJOI 2025
Bulgaria second team: 1. Damyan Svobodnikov Damyan_DD 2. Nikola Manolov nikolamanolov 3. Martin Vissoultchev m.viss2010 4. Aleksey Kartashev aleksey.kartashev1
go france!
Nobody tells me what France team is. Do you know who they are?
I do not know the codeforce accounts of the France team, the team members and leaders are available on the eJOI website. Furthermore, Hao Yuan Jiao is not only an aspiring programmer but is also 12th in the world at Brawl Stars!
Is his name Hoshimi Miyabi?
what are you referring to? 12th itw in total trophies?
this table needs an update.
bornag will win EJOI 2025! I am proud of having such a friend!
I made my final update before the contest. Good luck to all participants!
If anyone finds the contest rankings link please send it here
Kyrgyzstan team:
Bekten Abduvaliev PokemonMaster 1 time, 2 attempts left
Emirkhan Sydykbaev emirhanbanan 1 time, 2 attempts left
Aktan Mavlianov aktan4ik 1 time, 0 attempts left
Aruubek Baymyrzaev Fateless 1 time, 0 attempts left
Seems locked : https://results.ejoi.org/
username: results pasword: 42984995228833538421
Is it possible to look problems right now?
No they are not published yet
Do we need different user and password to see day 2 live results?
this one doesn't work i think
2 days ago, this one was working actually
Try the new one sorry I just woke up
SORRY I JUST WOKE UP HERE IS THE NEW PASSWORD
Day 1's over successfully.
3 of Azerbaijan's participants are in bronze
We as Turkey have only 1 in bronze range but one of them are very close
Oh wow!
I would have never guessed Azerbaijan would outperform Turkey.
Still great job tho
expect the unexpected.))
When will the problems be uploaded?
Cool. but 3 out of 4 Azerbaijani team cheated in past contests on CF? Absurd.
Do you have results for todays contest
Try this new password
Auto comment: topic has been updated by PieArmy (previous revision, new revision, compare).
Contest is over congratulations to all participants!
Is there any judge where I can submit?
Not yet but keep checking eolymp they have all ejois added so far
I went through 45 full submissions for the task Reactions and noticed an interesting pattern.
pref[i]-T[i], then query withsize - order_of_key(threshold). This is almost a copy of the editorial template.Numbers:
- 3 suspicious
- 42 non-suspicious (14 BIT, 12 segtree, 8 PBDS with variations, 3 merge sort tree, 5 hybrids).
I’m curious what others think: is it fair to flag as “editorial copies”, or is this similarity still within the bounds of normal contest coding style?
https://infos.infosbg.com/home?lang=en — source
How can I see the submissions?
Here
Hi, I have reviewed the 3 files side by side. To me, this does in NO way constitute evidence for cheating. The fact that 3 members of the same team used a similar trick to solve the problem simply shows that it's likely they have encountered a similar trick in their training programme, or similar. Please note that they also have vastly different coding styles, and that this is a proctored competition, which means that any form of copying is incredibly unlikely.
For the benefit of others, I attach a screenshot containing the submissions in question.
https://postimg.cc/tY88tx5f
I agree that direct copying during a proctored contest is unlikely. However, the concern here is not about live copying, but about the possibility of prior hints or guidance.
What makes these three submissions unusual is that they all rely on the same PBDS idiom (
size() - order_of_key(...)) in almost identical form. Among 40+ full solutions, including many that also used PBDS, Fenwick trees, or segment trees, we see a wide diversity of implementations — but no other case of this exact minimalistic trick.This statistical anomaly suggests that the similarity is not just due to "common training," and it deserves a more careful look beyond coding style and proctoring
mate this is not an unusual or particularly smart trick, this is literally equivalent to a[n-i] if a is an array.
Thanks for the analysis.
where can i do upsolve?
Check the comment below
The upsolve is available at Eolymp.