professorbrill's blog

IOI 2013 Participants
By professorbrill, 12 years ago, In English

I really liked the previous year's post on IOI participants so I decided to do the same for this year.

UPD: Colors updated

Name Country Codeforces Handle IOI 2012 Result
Albert Sahakyan Armenia albert96 No participation
Edgar Minasyan Armenia No participation
Edward Grigoryan Armenia edogrigqv2 No participation
Karen Hambardzumyan Armenia mahnerak No participation
Ishraq Huda Australia JoeyWheeler No participation
James Payor Australia jamespayor No participation
Michael Chen Australia rnsiehemt Bronze
Ray Li Australia AntiForest No participation
Adrian Goldwaser Australia 2 No participation
Austin Tankiang Australia 2 SpiritsUnite No participation
Joshua Lau Australia 2 junkbot Silver
Nicholas Laver Australia 2 No medal
Elmi Ahmadov Azerbaijan No medal
Rashid Gaziyev Azerbaijan No medal
Sanan Pashayev Azerbaijan No medal
Tahir Alizade Azerbaijan No medal
Bristy Sikder Bangladesh bristy1588 Bronze
Dhananjoy Biswas Bangladesh Corei13 Bronze
Hasib Al Muhaimin Bangladesh hasib No participation
Labib Rashid Bangladesh Labib666 No participation
Konstantin Sokol Belarus kostya_by No participation
Konstantin Vilchevski Belarus vilcheuski No participation
Sergey Kulik Belarus CherryTree Bronze
Vladislav Podtelkin Belarus vlad107 Silver
Floris Kint Belgium FKint Silver
Hannes Vandecasteele Belgium No medal
Simon Tihon Belgium No participation
Victor Lecomte Belgium vlecomte Bronze
Amer Zavlan Bosnia and Herzegovina charlieamer No participation
Armin Ašimović Bosnia and Herzegovina sleepmore No participation
Muhamed Parić Bosnia and Herzegovina No participation
Rijad Muminović Bosnia and Herzegovina rmumi No participation
Mateus Dantas Brazil MDantas No participation
Michel Zelazny Brazil michelzel No participation
Ramon Silva Brazil No participation
Renato Ferreira Brazil Renato_Ferreira Silver
Encho Mishinev Bulgaria Enchom No participation
Georgi Georgiev Bulgaria gogokefakefa No medal
Hristo Venev Bulgaria Silver
Momchil Peychev Bulgaria momo_vn No participation
Andy Huang Canada azneyes No participation
Angus Kong Canada No medal
Calvin Deng Canada dnkywin No participation
Yuanhao Wei Canada No participation
Haoran Xu China sillycross No participation
Kangning Wang China a142857a No participation
Lijie Chen China YuukaKazami No participation
Mingda Qiao China ACMonster No participation
Alan Navarro Colombia alan_navarro No medal
Diego Niquefa Colombia Bronze
Jaime Silva Colombia silvavelosa No medal
Sebastian Hoyos Colombia jshoyos No participation
Domagoj Ćevid Croatia Silver
Ivan Lazarić Croatia IvL No participation
Mislav Balunović Croatia mislav No participation
Mislav Bradač Croatia No participation
Aggelos Pelecanos Cyprus No participation
George Gabriel Cyprus No participation
Michalis Psalios Cyprus No medal
Panayiotis Panayiotou Cyprus No medal
Mark Karpilovskij Czech Republic shkarpa No participation
Martin Raszyk Czech Republic m.raszyk No participation
Ondřej Hlavatý Czech Republic No participation
Štěpán Šimsa Czech Republic simsa.st Bronze
Jakob Tejs Knudsen Denmark JakobTejs Bronze
Nikolaj Simling Kristensen Denmark No participation
Simon Hørup Eskildsen Denmark Sirupsen No medal
Svend Christian Svendsen Denmark svendcsvendsen Bronze
Ahmed Sherif Egypt No participation
Mohamed Essam Egypt mohamed.essam No participation
Omar Obeya Egypt aaaaAaaaaAaaaaAaaaaA No Medal
Yousef Salama Egypt Yousef_Salama Bronze
Andres Erbsen Estonia No medal
Jaan Toots Estonia No participation
Janno Veeorg Estonia No medal
Oliver-Matis Lill Estonia No participation
Henrik Lievonen Finland No participation
Kalle Luopajärvi Finland No participation
Sami Kalliomäki Finland No medal
David Saulpic France No participation
Hugo Manet France No participation
Jules Pondard France Bronze
Théophile Bastian France No participation
Giorgi Guliashvili Georgia guliashvili No participation
Jimmy Skhirtladze Georgia jskhirtladze Bronze
Nikoloz Svanidze Georgia svanidz1 Bronze
Tornike Mandzulashvili Georgia TMandzu No medal
Dimitrios Los Greece No medal
George Karagiaouris Greece Karaggeorge No participation
Giorgos Christoglou Greece Giorgos_Christoglou No participation
Panagiotis Kostopanagiotis Greece infinity No participation
Chun Yin Sampson Lee Hong Kong Sampson Bronze
Kam Chuen Tung Hong Kong alex20030190 No participation
Lik Hang Poon Hong Kong hohomu No participation
Pak Nam Hui Hong Kong LittleCow No participation
Akshat Boobna India No participation
Amartya Shankha Biswas India amartyashankha Bronze
Nihal Pednekar India nihalpi1 No participation
Nikhil Tadigoppula India 1nikhil9 No medal
Ammar Fathin Sabili Indonesia athin No participation
Jonathan Irvin Gunawan Indonesia jonathanirvings Bronze
Nathan Azaria Indonesia nathanajah Silver
Stefano Chiesa Indonesia zeulb No participation
Daniyal Mehrjerdi Iran dani1373 No participation
Farzad Abdolhosein Iran fab No participation
Keivan Alizadeh Vahid Iran keivan No participation
Seyed Hamed Valizadeh Iran havaliza Gold
Maciej Goszczycki Ireland No participation
Richard Tynan Ireland rptynan No participation
Daniel Hadas Israel Silver
Ohad Klein Israel No medal
Ron Ryvchin Israel No participation
Tom Kalvari Israel Silver
Davide Pallotti Italy davidepallotti No medal (Team 2)
Federico Glaudo Italy dario2994 Bronze
Gabriele Farina Italy obag No medal (Team 2)
Matteo Almanza Italy matteojug Bronze
Kohji Liu Japan hogloid Silver
Soh Kumabe Japan DEGwer No participation
Tsuyoki Kumazaki Japan wafrelka No participation
Yo Mitani Japan wo_ No participation
Aman Sariyev Kazakhstan Aman Silver
Meirambek Omyrzak Kazakhstan Meirambek No participation
Nurlan Zhussupov Kazakhstan NurlashKO No participation
Zhanadil Nurtoleuov Kazakhstan Zhanadil No participation
Bumsoo Park Korea zlzmsrhak Gold
Geunwoo Bae Korea Cauchy_Function No participation
Jeongwoo Ji Korea tonyjjw Silver
Seokhwan Choi Korea gs12117 No participation
Akylbek Tokon uulu Kyrgyzstan No participation
Alibek Taalaibek uulu Kyrgyzstan alibek_1 No medal
Azamatbek Akhmedov Kyrgyzstan Ahmedov No medal
Aleksejs Popovs Latvia popoffka Bronze
Aleksejs Zajakins Latvia Alex_2oo8 No participation
Mihails Smoļins Latvia No participation
Ojārs Vilmārs Ratnieks Latvia OVR Bronze
Daniel Talamas Mexico allthecode No participation
Diego Roque Mexico Diego9627 No participation
Edgar Santiago Mexico Garo9521 No medal
Saul Gutierrez Mexico sggutier Silver
Andrej Karadzic Montenegro No participation
Ilija Radosavovic Montenegro ilija123 No participation
Luka Bulatovic Montenegro MudoBog No medal
Bouke Van der Bijl Netherlands bvdbijl Bronze
Jorn Hoofwijk Netherlands No participation
Jorrit Dorrestijn Netherlands No participation
Koen Wolters Netherlands koensw No medal
Błażej Magnowski Poland No participation
Krzysztof Pszeniczny Poland No participation
Marek Sommer Poland mareksom No participation
Stanisław Dobrowolski Poland No participation
Afonso Santos Portugal No medal
David Gomes Portugal No participation
Pedro Silva Portugal No participation
Victor Meriqui Portugal No participation
Andrei Heidelbacher Romania andreihh No participation
Mihai Popa Romania mihaipopa12 No participation
Rares Buhai Romania rares.buhai Gold
Vlad Gavrila Romania VladGavrila Gold
Artur Ryazanov Russia tunyash No participation
Dmitry Gorbunov Russia malcolm No participation
Konstantin Semyonov Russia zemen No participation
Nikolay Kalinin Russia KAN No participation
Dimitrije Erdeljan Serbia No participation
Ivan Stošić Serbia ivan100sic Silver
Marko Baković Serbia Delta003 No participation
Marko Stanković Serbia MeinKraft No participation
Eduard Batmendijn Slovakia Baklazan Gold
Jakub Šafin Slovakia Xellos Bronze
Jaroslav Petrucha Slovakia No participation
Jozef Marko Slovakia jodik No participation
Janneman Gericke South Africa No participation
Paul le Roux South Africa No participation
Robert Spencer South Africa rspencer No medal
Shaylan Lalloo South Africa No participation
Anton Grensjö Sweden No medal
Aron Granberg Sweden No participation
Johan Sannemo Sweden jsannemo Bronze
Mårten Wiman Sweden Gullesnuffs Bronze
Aleksandar Abas Syria Alex7 No participation
Gaith Hallak Syria Gaith No participation
Hasan Jaddouh Syria kingofnumbers No participation
Hussain Karra Fallah Syria Pepe.Chess No participation
Han-Chung Wang Taiwan darkhh No participation
Hsin-Yuan Huang Taiwan Robert No participation
Kai-Chi Huang Taiwan step5 No participation
Li Chen Taiwan akaiNeko No participation
Abduqodir Qurbonzoda Tajikistan abdukodir No medal
Haitov Jamshed Tajikistan Jamik No medal
Turaev Mehrubon Tajikistan Ximera No participation
Umarov Doro Tajikistan Alnair No participation
Jirayu Luewetwanit Thailand Feu Bronze
Krittisak Chaiyakul Thailand toppykung No participation
Pichayut Liamthong Thailand pichayut No participation
Tossaporn Saengja Thailand App No participation
Feker Hassine Tunisia No participation
Malek Ben Romdhane Tunisia No participation
Meriem Chaabani Tunisia No participation
Mohamed Amine Hamza Tunisia No participation
Alperen Yakut Turkey ayakut No medal
Burak Bugrul Turkey burakbugrul No participation
Semih Basrik Turkey sbasrik No participation
Yusuf Hakan Kalayci Turkey t0nyukuk No medal
Ahmet Hudayberdiyev Turkmenistan turkmen No participation
Begmuhammet Kakabayev Turkmenistan Bega Bronze
Dovletgeldi Aydogdyyev Turkmenistan 1O1 No medal
Sylap Aliyev Turkmenistan accidentallygivenfuck No participation
Dmitry Fedoryaka Ukraine fedimser No participation
Ilya Shevchenko Ukraine Scorpy No participation
Roman Furko Ukraine Furko Bronze
Roman Rubanenko Ukraine Rubanenko Bronze
Andrew Carlotti United Kingdom Silver
James Clarke United Kingdom No participation
Saravanan Sathyanandha United Kingdom No participation
Toby Cathcart Burn United Kingdom No participation
Johnny Ho United States of America random.johnnyh Gold
Joshua Brakensiek United States of America AstroConjecture No participation
Scott Wu United States of America scott_wu Gold
Steven Hao United States of America stevenkplus No participation
Bui Do Hiep Vietnam hiepsieunhan No participation
Duong Thanh Dat Vietnam infrmtcs No participation
Le Xuan Manh Vietnam No participation
Nguyen Tuan Anh Vietnam con_nha_ngheo Silver

If you know any other countries' delegations, let me know in the comments. Thanks!

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Comments Comments (140)
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12 years ago, # |
← Rev. 5   Vote: I like it -12 Vote: I do not like it

Why duplicated blogs ??

similar blog opened here

furthmore, my name is Hasan Jaddouh not Hasan Jaddou , as written in my passport and my codeforces profile ,please fix it

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    12 years ago, # ^ |
    ← Rev. 3   Vote: I like it +21 Vote: I do not like it

    So far I've seen about 0 commitment from the other post — no table, no adding data from comments etc. Let's see how this goes. Also, why have you asked to change your name only here? :)

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      12 years ago, # ^ |
        Vote: I like it +1 Vote: I do not like it

      Alex7 Last visit: 14 hours ago , maybe you should wait until he enter codeforces then judge him.

      also I told my friend to change my name in facebook :)

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        12 years ago, # ^ |
          Vote: I like it 0 Vote: I do not like it

        Well, of course, but to start with a table would have been a great start. Anyway, I believe Alex7 and professorbrill should talk to each other/fight each other/throw a dice/etc. and decide on one thread to leave, if they both going to maintain the page, but the duplicates of this type of threads aren't exactly productive.

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    12 years ago, # ^ |
      Vote: I like it +9 Vote: I do not like it

    I am ready to give up my post to Alex7 whenever he wants. I just thought that he wouldn't do the table :)

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12 years ago, # |
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Umarov Doro member of Tajikistan team Codeforces username is Alnair

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12 years ago, # |
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Although I'm a fake one of YuukaKazami, I want to say his(many people use her lol, maybe you can use her too) name is Lijie Chen.

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    12 years ago, # ^ |
    ← Rev. 3   Vote: I like it +5 Vote: I do not like it

    Seems consistent with this and this. Yuuka Kazami on the other hand seems like a fictional character (and an alternate nickname) — very consistent with this. Fully support the change.

    P.S. WJMZ8MR , when suggesting to change someone's name completely from what's written in the profile, please try to give at least some proof. But thanks.

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      12 years ago, # ^ |
      ← Rev. 2   Vote: I like it +20 Vote: I do not like it

      I bet you can do well as a detective :).

      My real name is LiJie Chen QAQ, Yuuka Kazami is my favorite character in Touhou >w<.(My avatar).

      Also sillycross's name is HaoRan Xu.

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        12 years ago, # ^ |
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        what is the meaning of QAQ?

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          12 years ago, # ^ |
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          I'm not sure, but I think it's a smile face

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            12 years ago, # ^ |
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            In fact,it's a crying face

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              12 years ago, # ^ |
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              I didn't mean by smile is smiling , I meant it's emotion face , I used to call them "smile faces"

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12 years ago, # |
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I didn't have enough info to do this. professorbrill your post is much better than mine, I only wanted to point it out...

Good luck everyone!!

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12 years ago, # |
  Vote: I like it +4 Vote: I do not like it

Yusuf Hakan Kalayci(Turkey) was a participant last year. But, unlucky, he couldn't win. Thanks for EDIT.

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    12 years ago, # ^ |
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    Haitov Jamshed has so story too, TJK

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12 years ago, # |
  Vote: I like it +8 Vote: I do not like it

Serbian team:

  1. Ivan Stošić ivan100sic, IOI 2012 Silver

  2. Marko Stanković MeinKraft

  3. Marko Baković Delta003

  4. Dimitrije Erdeljan [no handle]

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12 years ago, # |
← Rev. 4   Vote: I like it +8 Vote: I do not like it

Danish (from Denmark) team consists of:

  • Simon Hørup Eskildsen Sirupsen, no medal IOI12
  • Jakob Tejs Knudsen JakobTejs, bronze medal IOI12
  • Svend Christian Svendsen svendcsvendsen, bronze medal IOI12
  • Nikolaj Simling Kristensen (no known handle), no previous participation
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12 years ago, # |
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Montenegro:

Luka Bulatovic( MudoBog ) — IOI 2012 — no medal

Ilija Radosavovic ( ilija123 ) — didn't participate at IOI 2012

Andrej Karadzic ( no handle ) — didn't participate at IOI 2012

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12 years ago, # |
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French participants will be known after the 2 may.

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12 years ago, # |
← Rev. 5   Vote: I like it +22 Vote: I do not like it

Team of Georgia :

svanidz1 Nikoloz Svanidze Bronze

jskhirtladze Jimmy Skhirtladze Bronze

guliashvili Giorgi Guliashvili No participation

TMandzu Tornike Mandzulashvili No medal

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12 years ago, # |
  Vote: I like it +12 Vote: I do not like it

Bosnia & Herzegovina

  1. Rijad Muminović — rmumi — no participation
  2. Armin Ašimović — sleepmore — no participation
  3. Amer Zavlan — charlieamer — no participation
  4. Muhamed Parić — no handle — no participation
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12 years ago, # |
  Vote: I like it +7 Vote: I do not like it

professorbill, please add the new teams to the table..

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    12 years ago, # ^ |
      Vote: I like it +33 Vote: I do not like it

    He hasn't been on the site for 5 days.

    Regardless, this week, I'll implement the addition of contestants to the future olympiads at IOI database, and the list of participants for all olympiads (which is currently absent) with all the information I have (country, links to CF/TC profiles, past achievements).

    If there is any other information community would like to see in that table, I would gladly listen.

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12 years ago, # |
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haha only georgian team has all members' ranks higher or equal to yellow

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12 years ago, # |
← Rev. 6   Vote: I like it +10 Vote: I do not like it 
Country: Bangladesh

Participants: 

Dhananjoy Biswas [user:Corei13] [ last year: Bronze ]

Bristy Sikder [user:bristy1588] [ last year: Bronze ]

Labib Rashid [user:Labib666] [last Year: No Participation ]

Hasib Al Muhaimin [user:hasib] [last year: No participation ]
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12 years ago, # |
← Rev. 4   Vote: I like it 0 Vote: I do not like it

Country: Brazil

Participants:

Renato Ferreira — Renato_Ferreira — Silver

Mateus Dantas — MDantas — No Participation

Ramon Silva — No Handle — No Participation

Michel Zelazny — michelzel — No Participation

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12 years ago, # |
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Czech republic:

Štěpán Šimsa simsa.st (last IOI: bronze)

Ondřej Hlavatý (last IOI: no participation)

Mark Karpilovskij shkarpa (last IOI: no participation)

Martin Raszyk m.raszyk (last IOI: no participation)

Slovakia:

Eduard Batmendijn (last IOI: gold)

Jakub Šafin Xellos (last IOI: bronze)

Jozef Marko jodik (last IOI: no participation)

Jaroslav Petrucha (last IOI: no participation)

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    12 years ago, # ^ |
      Vote: I like it +5 Vote: I do not like it

    Thanks for posting, however I'll wait to update it to my database due to things you mentioned in the second thread.

    The reason for Czech Republic is that even when criteria is used to select a team, some people might refuse to go (we had a similar situation this year due to IMO), so I would really like to hear from someone who actually know the team.

    As for Slovakia, while I understand the case of "unless **** happens", I've heard of "**** happenning on the last day of the camp", so as soon as you say it's finished, I'll update it.

    But again, thanks anyway.

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      12 years ago, # ^ |
        Vote: I like it +6 Vote: I do not like it

      Actually, it was "unless magic happens", because the difference in points between 4. and 5. place was larger than the points for the last day's sub-contest. In this case, people refusing participation (or changes in scoring) are magic,

      Anyway, got both confirmed. Those are the "regular" teams at least (there could always be changes due to a member running around castles, falling and breaking their hand or so :D)

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12 years ago, # |
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professorbrill , you might want to add both teams of Australia.

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    12 years ago, # ^ |
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    Is any country free to have two teams?

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      12 years ago, # ^ |
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      Traditionally only host.

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        12 years ago, # ^ |
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        Is there any important difference between the two teams of a certain host? Or are they both equal participants of IOI?

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          12 years ago, # ^ |
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          As far, as I understand second team is non-competitive. At least at Thailand they got "Сertificate equivalent to a gold/silver/bronze medal", instead of medal.

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          12 years ago, # ^ |
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          From IOI Regulations (2010 version):

          S5.8 The Present Host may have a second, non-ranked, team at IOI’n.

          The only 2 years when the second team won any medals and was ranked were 1989 and 1996. In 1989 Teodor Tonchev won the IOI from the second team with no mentions of anything unrated in the official IOI 1989 booklet and clearly stating that he won the main prize. In 1996 second team from Hungary received 4 bronze medals, and they were mentioned in the results table as bronze medals as well.

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12 years ago, # |
← Rev. 4   Vote: I like it +11 Vote: I do not like it

The team from The Netherlands:

  • Bouke van der Bijl bvdbijl (bronze medal IOI 2012)
  • Jorn Hoofwijk
  • Jorrit Dorrestijn (participated IOI 2011)
  • Koen Wolters koensw (participated IOI 2012)
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12 years ago, # |
← Rev. 2   Vote: I like it +8 Vote: I do not like it

From South Africa:

Janneman Gericke (new)

Shaylan Lalloo (new)

Paul le Roux (new)

Robert Spencer (no medal 2012) rspencer

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12 years ago, # |
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Team Italy:

  • Matteo Almanza (matteojug), IOI2012 bronze
  • Gabriele Farina (obag), IOI2012 team B (= no participation?)
  • Federico Glaudo (dario2994), IOI2012 bronze
  • Davide Pallotti (davidepallotti), IOI2012 team B (= no participation?)
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12 years ago, # |
← Rev. 5   Vote: I like it +26 Vote: I do not like it

Top-4 from Belarus according to the results of the elections:
- Vladislav Podtelkin(vlad107)
- Konstantin Sokol(kostya_by)
- Sergey Kulik(CherryTree)
- Konstantin Vilchevski(vilcheuski)
This is not official information.
UPD This is our official team now.

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    12 years ago, # ^ |
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    Sorry, could you please clarify what do you mean by not official information? Is it like unofficial in a way that you know a team, but it's not officially published or is it like unofficial in a way that the team might as well change later?

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    12 years ago, # ^ |
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    Would like to point out to professorbrill that this is updated as official. Also adding that Vladislav Podtelkin won silver in 2012, while Sergey Kulik got bronze. Other two contetants are new to IOI.

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12 years ago, # |
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The Croatian team is known now, a blog post about it

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12 years ago, # |
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Team Greece has been added.

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12 years ago, # |
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Egypt:

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    12 years ago, # ^ |
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    Oh. Can you explain this name for Yousef Salama then, please?

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      12 years ago, # ^ |
      ← Rev. 2   Vote: I like it +13 Vote: I do not like it

      Youssef Mohamed Mohamed Ibrahim Salama, We got used to call him Yousef Salama.

      Youssef Ibrahim == Yousef Salama.

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        12 years ago, # ^ |
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        Thanks! Merged. Left Ibrahim, because he's called like that in all IOI 2012 official documents.

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12 years ago, # |
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Hong Kong Team:

  1. Hui Pak Nam (LittleCow) — No participation
  2. Lee Chun Yin (Sampson) — Bronze
  3. Poon Lik Hang (hohomu) — No participation
  4. Tung Kam Chuen (alex20030190) — No participation
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12 years ago, # |
← Rev. 5   Vote: I like it +5 Vote: I do not like it
How about adding birth years of participants? I think it will be interesting for everybody.
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12 years ago, # |
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Romanian Team:

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12 years ago, # |
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France: - Jules Pondard (bronze last IOI) - Hugo Manet (first time) - David Saulpic (first time) - Théophile Bastian (first time)

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12 years ago, # |
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Indonesian team:

  • Nathan Azaria (nathanajah) — Silver
  • Jonathan Irvin Gunawan (jonathanirvings) — Bronze
  • Ammar Fathin Sabili (athin) — No participation
  • Stefano Chiesa (zeulb) — No participation
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12 years ago, # |
← Rev. 2   Vote: I like it +26 Vote: I do not like it

Vietnamese team:

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    12 years ago, # ^ |
    ← Rev. 2   Vote: I like it +18 Vote: I do not like it

    Em la nguoi Viet song a Nga va rat muon duoc biet o Viet Nam tuyen chon doi di thi lap trinh quoc te the nao a? Thi toan quoc roi chon top 4? Hay la co vai Qualification Rounds to chuc cho top 20 roi sau do moi chon top 4 tu 20 nguoi dua tren ket qua Qualification Rounds?

    Viet them tieng Anh nua chu ko Codeforces community ghet minh mat.

    I am a Vietnamese who lives in Russia. I am very interested in the way of choosing IOI participants in Vietnam. Are those the top 4 of the National Olympiad in Informatics? Or top 20 are chosen and then there are several Qualifications Rounds, based on the results of which the top 4 are chosen?

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      12 years ago, # ^ |
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      This year we had 3 rounds. Each round has 2 competition days. 1st round: 3 hours each day, 2nd and 3rd round: 5 hours each.

      After 1st round, top 28 are selected. After 2nd round, top 6 are selected. After 3rd round, top 4 are selected.

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        12 years ago, # ^ |
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        Are there any specialized schools which provide strong candidates every year? Those schools organize training rounds for practicing, don't they? Is there any way I can find information, tasks from those Qualification Rounds for IOI? Website or anything like that?

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          12 years ago, # ^ |
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          Unfortunately, we don't have the official website for Vietnam Olympiad. Only problems in the first round (with unofficial testdata) are uploaded to http://vn.spoj.com/ (in Vietnamese, of course). For problems in subsequent rounds, you may better ask contestants who participated in (there are a few who are currently active on Codeforces).

          Regarding your first question, We have a few schools that consistently produce good students every year (you can check this wiki) to see Vietnamese medalists and their high schools). Of course, each school has its own training program, training students from scratch during three years.

          By the way, are you planning to go back to Vietnam for next year's selection? I'm just curious :)

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            12 years ago, # ^ |
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            Well, all these schools are familiar to me from my parents' stories about elite ones in Vietnam (my Mom told me if we were to return to Vietnam she would surely want me to get into one of those or Hanoi Ams).

            Regarding my plans of returning: no I'm not returning to Vietnam since I have studied here in Russia from the 1st grade; currently I am in the 10th grade (Vietnamese 11th since we study only 11 years in Russia), and it must be a very foolish idea to return, though my parents had such plans after my 4th grade in Russia (Vietnamese 5th). Moreover, I am quite sure there many more talented people in my homeland. So I have no worries about the Vietnamese team.

            But, to tell you the truth, I would like to participate unofficially :P

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12 years ago, # |
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Mexican Team:

  1. Diego Roque (Diego9627) — No participation
  2. Daniel Talamas (allthecode) — No participation
  3. Saul Gutierrez (sggutier) — IOI 2012 Silver
  4. Edgar Santiago (Garo9521) — No medal
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12 years ago, # |
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No IOI 2013 Facebook group this year?

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12 years ago, # |
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The Indian Team , Declared here : http://www.iarcs.org.in/inoi/current.php#ioi2013

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12 years ago, # |
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Here are teams from Bulgaria and Portugal.

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12 years ago, # |
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Team from Israel has been added.

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12 years ago, # |
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Bulgaria :

Hristo Venev — — Silver

Georgi Georgiev — gogokefakefa — No Medal

Momchil Peychev — momo_vn — No Participation

Encho Mishinev — Enchom — No Participation

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12 years ago, # |
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Have appeared Rules of IOI 2013!

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    12 years ago, # ^ |
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    Indeed. Not like I didn't know the most important change: the absence of tokens from Misof already :D

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    12 years ago, # ^ |
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    ...even running a single "ping" command is strictly prohibited and may lead to disqualification... :)

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12 years ago, # |
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Well, Amartya Shankha Biswas in Indian Team is amartyashankha. :) Last year he got bronze medal in IOI.

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12 years ago, # |
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Teams from Sweden, Belgium and Cyprus have been added.

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12 years ago, # |
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Russia

Nikolay Kalinin KAN KalininN
Dmitry Gorbunov malcolm malcolm734
Konstantin Semyonov zemen zemen96
Artur Ryazanov tunyash tunyash

Formally, this is unofficial now, because it should be approved by Ministry of Education. But this is just bureaucracy.
All four have no participations before.

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    12 years ago, # ^ |
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    Just out of curiosity, why do you need your team to be approved by Ministry of Education ?

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      12 years ago, # ^ |
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      Russia has a wide spectre of different national wide olympiads (informatics, math, biology, physics, languages, etc). All of them at organized by Ministry of Education and get some kind of government support. So, our national training camps are also sponsored and controlled by Ministry. It also provides some money for our olympic teams. As you can see, all big events are in the area of Ministry.

      In short: bureaucracy, and there should be some formal paper for budget planning. "Approved" is a strong word here, I would replace it with "signed".

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        12 years ago, # ^ |
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        It's amazing how your country support the olympiads, I wish Brazil had that kind of support, it's really difficult to get some kind of support or just a little help from our country. We don't even get noticed when we got a really good result. All they cares here is about soccer and carnival, education is something that don't really matters in Brazil.

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          12 years ago, # ^ |
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          To tell you the truth, though we do get support in term of olympiads, the Ministry of Education always comes up with some stupid ideas which seem never to get approved, especially by the population. I hope they come up with crazy ideas concerning olympiads not so soon.

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            12 years ago, # ^ |
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            Are you talking about Brazil ? I've been doing Olympiads for quite a long time and not a single help from the government was given. One of my friend'ss team that went to 2012 World Finals ( ACM-ICPC) was hoping that someone from the government would help them to go to Warsaw, but no one helped and they had to spend their money and beg for some support from some companies. Right now I don't see the government interest in support olympiads.

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          12 years ago, # ^ |
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          I guess the situation's similar in most post-Warszaw treaty countries... as founding countries of many international olympiads, it's to be expected :D

          In Slovakia, the bigger problem is how purely scientific olympiads are sligtly disadvantaged compared to new-style competitions that require you to sell your ideas and not show they're correct (often even hide that they're incorrect). And weird shit sometimes happens for no reason, like deciding that all olympiads will be held at the same place... I pity people who want to do multiple olympiads for several years, taking the same tours (post-competition programme) several times. The financial support from the government could be better, too. As you can see, we've also got our fair share of trouble :D

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12 years ago, # |
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Team Finland:

  1. Sami Kalliomäki (no medal)
  2. Henrik Lievonen (no participation)
  3. Kalle Luopajärvi (no participation)
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    12 years ago, # ^ |
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    May I ask why only 3 contestants?

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      12 years ago, # ^ |
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      Unfortunately, we don't have money to send a full team.

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        12 years ago, # ^ |
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        What? who do you mean by "we" ? your government?

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          12 years ago, # ^ |
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          The funding comes from the government and other sources. The problem is that algorithm programming is not very appreciated in Finland. If we played ice hockey, we would have no problems with funding.

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            12 years ago, # ^ |
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            In Latvia we have pretty much the same attitude. Fortunately, the tickets to the IOI are covered for us, but, as regards participation in the Baltic Olympiad in Informatics, usually zero support is given by the respective government authorities (as far as I know). Can't blame anyone, though, since the ice hockey team is the national priority (:

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12 years ago, # |
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Tunisian team Tunisian team

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    12 years ago, # ^ |
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    sorry if it's annoying , I tried to put it as a link to this photo but CF system considered it as a photo

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      12 years ago, # ^ |
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      Tunisian team

      Really?

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        12 years ago, # ^ |
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        how did you make it?

        I just used the button "link" to put the photo but I was viewed as photo not link

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        12 years ago, # ^ |
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        maybe this bug has been fixed,

        I remember with I posted my comment both photo and link was like this:

        ![Your text to link here...](http://)

        and CF system will detect it if it's link or photo (I think)

        but now it's different from each other by prefix "!"

        link: [Your text to link here...](http://)

        photo: ![ ](http://)

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12 years ago, # |
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Teams from United Kingdom, Canada, Estonia and Poland have been added.

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12 years ago, # |
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India Team

1.Akshat Boobna (No handle) No Participation.

2.Amartya Shankha Biswas (amartyashankha) Bronze.

3.Nihal Pednekar (nihalpi1) No Participation.

4.Nikhil Tadigoppula (1nikhil9) No Medal.

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12 years ago, # |
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JAPAN team:

  1. Tsuyoki Kumazaki (wafrelka) No Participation

  2. Soh Kumabe (DEGwer) No Participation

  3. Yo Mitani (wo_) No Participation

  4. Kohji Liu (hogloid) Silver

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12 years ago, # |
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Кыргызстан 1.Таалайбек уулу Алибек(alibek_1) 2.Ахмедов Азаматбек(ahmedov) 3.Токон уулу Акылбек

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12 years ago, # |
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IOI team from USA:

Scott Wu — scott_wu scott_wu

Johnny Ho — random.johnnyh random.johnnyh

Josh Brakensiek — AstroConjecture AstroConjecture

Steven Hao — stevenkplus aceofdiamonds

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12 years ago, # |
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The team of Italy for IOI:

1-Davide Pallotti davidepallotti No medal (Team 2)

2-Federico Glaudo dario2994 Bronze

3-Gabriele Farina obag No medal (Team 2)

4-Matteo Almanza matteojug Bronze

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12 years ago, # |
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The team from Kazakhstan has been added.

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12 years ago, # |
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Colombia team:

Diego Niquefa niquefa_diego IOI 2012 Bronze Jaime Silva silvavelosa IOI 2012 no medal Alan Navarro alan_navarro IOI 2012 no medal Sebastian Hoyos jshoyos IOI 2012 no participation

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12 years ago, # |
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Republic of Korea Team:

Bumsoo Park(zlzmsrhak, IOI 2012 Gold)

Geunwoo Bae(IOI 2012 No participation)

Jeongwoo Ji(tonyjjw, IOI 2012 Silver)

and me.(Seokhwan Choi, IOI 2012 No participation)

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12 years ago, # |
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Taiwan:
Kai-Chi Huang(step5) — No participation
Hsin-Yuan Huang(Robert) — No participation
Li Chen(akaiNeko) — No participation
Han-Chung Wang(darkhh) — No participation

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12 years ago, # |
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The team from Azerbaijan has been added.

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11 years ago, # |
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Practice tasks for IOI 2013 are available. By the looks of it, this year they've decided to give some tasks.

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    11 years ago, # ^ |
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    Can anyone help with the second task?

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      11 years ago, # ^ |
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      First observation is that if you are going to stay in i-th country then stay for P[i] days because if you stayed for less then you haven't done anything.

      Second observation is that if you stayed in i-th country and gained citizenship then after that you shouldn't stay in the j-th country if P[j] > Q[i] and if you didn't stay in any such country then the i-th country citizenship will remain with you, because if you visited the j-th country then you won't be able to visit the i-th country in this period and if you didn't you will be.

      So let's say that we have a group of countries A, and we want to check if we can gain citizenship for all of them, let's iterate over A in decreasing order according to the value of Q, in every step we try to put the current country (call it i) in the best place possible, the idea is that if we stayed in this country as late as possible , less number of countries will be affected by the condition of this country.

      Let's find the index j such that we can stay in the i-th country any time before we stay in the j-th country, we will stay in the i-th country right before the j-th country, so all the countries from the j-th to the last country will be affected by the i-th country condition, so all of them must have there P value <= Q[i].

      Now we can check that we can gain citizenship of all countries of A, if after we sort A in decreasing order according to the value of Q, there is no two indices i and j such that j < i and P[i] > Q[j] and P[j] > Q[i].

      Now let's sort all the countries that is given to us in decreasing order of the value of Q, first let's say dp[x] = the size of the largest subset from the first x countries such that we can gain citizenship for all of them then dp[x] = max(dp[x — 1], the size of the largest subset that we can gain citizenship for all of it and ends with index x) let's find using binarysearch the index y such that all the countries with index y and below have their Q value >= P[x], then we can include the subset dp[y] safely, and for the values from y + 1 to x — 1 we should include only the countries that have their P value <= Q[x], we can find this countries using segment tree.

      My code: http://pastebin.com/WtCEYBZL

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        11 years ago, # ^ |
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        Thanks very much, but I have question. What does the function int query return? I didn't understand it at all.

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          11 years ago, # ^ |
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          In every node in the segment tree, let's say it represents the range [L, R], I store a sorted version of this range in the node, then when i want to find the number of elements in a range [s, t] that are < some value k (that's what the query method does), I find the group of nodes that add up to this range, and binary search on each of them to find the number of elements < k, and return the sum.

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11 years ago, # |
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Update: team Slovakia, Eduard Batmendijn: CF handle Baklazan

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11 years ago, # |
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The official list of contestants has been published. I and popoffka are currently working on getting the data in the database.

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11 years ago, # |
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The full participant list was imported from the IOI website to the database. The leaders/deputy leaders were added to the delegations as well. The photos will be added at a later date.

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11 years ago, # |
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Too Late ?? (I think no. Handles are not available here)
Turkmenistan :
1. Sylap accidentallygivenfuck Aliyev — 1997 — No participation
2. Begmuhammet Bega Kakabayev — 1996 — Bronze(2012)
3. Dovletgeldi 1O1 Aydogdyyev — 1996 — No medal(2012)
4. Ahmet turkmen Hudayberdiyev — 1996 — No participation

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11 years ago, # |
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It would be nice to update the CF-color for all the participants at the start of IOI.

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11 years ago, # |
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who knows the link to the online tours results?

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