XXI IOI Contestants.
| # | Name | Country | TopCoder | IOI2008 | IOI2007 | IOI2006 |
|---|
| 1 | Enis Ulqinaku | Albania | | | | |
| 2 | Andrea Neco | Albania | | | | |
| 3 | Loreta Leka | Albania | | | | |
| 4 | Ertjon Mecka | Albania | | | | |
| 5 | Martin Fixman | Argentina | Fixman | Bronze | | |
| 6 | Esteban Oscar Ordano | Argentina | tibix | + | | |
| 7 | Lucas Tavolaro Ortiz | Argentina | Tavo92 | | | |
| 8 | Nicolas Bruno Ponieman | Argentina | nicoelrulo | Bronze | | |
| 9 | Hayk Saribekyan | Armenia | hayk.saribekyan | Bronze | + | |
| 10 | Mikayel Sukiasyan | Armenia | MSGM | | | |
| 11 | Hayk Tepanyan | Armenia | Hayko | | | |
| 12 | Aleksandr Chatrchyan | Armenia | | | | |
| 13 | Daniel Berger | Australia | | | | |
| 14 | Evgeny Martynov | Australia | | | | |
| 15 | David Tian | Australia | | | | |
| 16 | Kenneth Kok Ming Wong | Australia | | | | |
| 17 | Patrik Fimml | Austria | | Bronze | | |
| 18 | David Madl | Austria | | | | |
| 19 | Michael Rader | Austria | | | | |
| 20 | Christoph Rieder | Austria | | | | |
| 21 | Azad Gazanfar Salahli | Azerbaijan | | | | |
| 22 | Tural Vugar Gulmammadov | Azerbaijan | | | | |
| 23 | Tural Islam Neymanov | Azerbaijan | | + | + | |
| 24 | Farman Iqbal Farmanov | Azerbaijan | | | | |
| 25 | Mohammad Abirul Islam | Bangladesh | tsalman | | | |
| 26 | Henadzi Karatkevich | Belarus | tourist | Gold | Gold | Silver |
| 27 | Artem Volkhin | Belarus | | | | |
| 28 | Ihar Brukau | Belarus | | | | |
| 29 | Dzmitry Bahdanau | Belarus | | | | |
| 30 | Adnan Ademovic | Bosnia and Herzegovina | | + | | |
| 31 | Damir Ferizovic | Bosnia and Herzegovina | | | | |
| 32 | Igor Peric | Bosnia and Herzegovina | | + | | |
| 33 | Nihad Obradovic | Bosnia and Herzegovina | | | | |
| 34 | Gabriel Luis Mello Dalalio | Brazil | | Bronze | | |
| 35 | Andre Hahn Pereira | Brazil | | | | |
| 36 | Renato Ferreira Pinto Junior | Brazil | | | | |
| 37 | Felipe Abella Cavalcante Mendona Souza | Brazil | | | | |
| 38 | Momchil Slavchev Tomov | Bulgaria | momtchil | Silver | | |
| 39 | Rumen Hristov Hristov | Bulgaria | exod40 | Silver | | |
| 40 | Anton Georgiev Anastasov | Bulgaria | anastasov.bg | | | |
| 41 | Ivan Vergiliev Georgiev | Bulgaria | john_rapera | | | |
| 42 | Momchil Ivanov Ivanov | Bulgaria2 | spacedout_varna | | | |
| 43 | Mihail Hristov Kovachev | Bulgaria2 | mi6091 | | | |
| 44 | Stefan Yordanov Avramov | Bulgaria2 | stef.lp | Bronze | | |
| 45 | Ivan Todorov Todorov | Bulgaria2 | m1ke | | | |
| 46 | Aleksandar Boyanov Todorov | Bulgaria3 | gibona | | | |
| 47 | Kalina Hristova Petrova | Bulgaria3 | Kalina | | | |
| 48 | Aleksandar Milenov Gyorev | Bulgaria3 | Lugera | | | |
| 49 | Yasen Zdravkov Trifonov | Bulgaria3 | the_saint | | | |
| 50 | Peter Wen | Canada | Foundation | | | |
| 51 | Robin Cheng | Canada | hpmv | Bronze | | |
| 52 | Hanson Wang | Canada | v3ctor | + | | |
| 53 | Brian Bi | Canada | bbi5291 | | | |
| 54 | Francisco Hernandes | Chile | | | | |
| 55 | Jurgen Haysen | Chile | | | | |
| 56 | Rene Tapia | Chile | | | | |
| 57 | Daniel Acuna | Chile | | | | |
| 58 | ZiChao Qi | China | qizichao | | | |
| 59 | YiHan Gao | China | gaoyihan | | | |
| 60 | JieMing Mao | China | maojmtc | | | |
| 61 | ErJin Zhou | China | zhouerjin | | | |
| 62 | Che-Yang Wu | Chinese Taipei | | Gold | | |
| 63 | You-Cheng Syu | Chinese Taipei | | Silver | | |
| 64 | Szu-Po Wang | Chinese Taipei | | | | |
| 65 | Pi-Hsun Shih | Chinese Taipei | | | | |
| 66 | Rafael Mantilla | Colombia | | Bronze | | |
| 67 | Jaime Silva | Colombia | | | | |
| 68 | Diego Caballero | Colombia | | | | |
| 69 | Christian Zuluaga | Colombia | | + | | |
| 70 | Goran Zuzic | Croatia | Zuza | Gold | Gold | |
| 71 | Jaksa Markotic | Croatia | tikva | | | |
| 72 | Ivan Pilat | Croatia | IP314 | | | |
| 73 | Stjepan Glavina | Croatia | stjepan | | | |
| 74 | Ramon Alejandro Reyes Fajardo | Cuba | | | | |
| 75 | Leandro Castillo Valdes | Cuba | | | | |
| 76 | Kleitos Papadopoulos | Cyprus | | | | |
| 77 | Marios Hadjimichael | Cyprus | | | | |
| 78 | Panos Evagorou | Cyprus | | | | |
| 79 | Pavlos Apostolidis | Cyprus | | | | |
| 80 | Vlastimil Dort | Czech Republic | | | | |
| 81 | Hynek Jemelik | Czech Republic | | | | |
| 82 | David Klaska | Czech Republic | | | | |
| 83 | Karel Tesar | Czech Republic | | | | |
| 84 | Joakim Sindholt | Denmark | | + | | |
| 85 | Mathias Tejs Knudsen | Denmark | | | | |
| 86 | Thomas Dybdahl Ahle | Denmark | | | | |
| 87 | Soren Dahlgaard | Denmark | | + | + | |
| 88 | Ahmed Salem Ezzat | Egypt | mrtempo | Bronze | | |
| 89 | Islam Diaa El Din El-Tayar | Egypt | desert_lion | | | |
| 90 | Omar Ahmed Ali | Egypt | oa12gb | | | |
| 91 | Emad Farag William | Egypt | EmadWilliam | + | | |
| 92 | Ardi Loot | Estonia | | + | | |
| 93 | Tiina Turban | Estonia | | | | |
| 94 | Jaagup Repan | Estonia | | | | |
| 95 | Dmitri Gabbasov | Estonia | | | | |
| 96 | Nuutti Holtta | Finland | | | | |
| 97 | Santtu Keskinen | Finland | | | | |
| 98 | Jussi Kokkala | Finland | | | | |
| 99 | Lari Sinisalo | Finland | | | | |
| 100 | Simon Forest | France | | | | |
| 101 | Paul Kirchner | France | | | | |
| 102 | Ismael Belghiti | France | | | | |
| 103 | Timothee Lacroix | France | | + | | |
| 104 | Levan Varamashvili | Georgia | varlevani | Bronze | + | |
| 105 | Tsotne Tabidze | Georgia | tsotne | + | | |
| 106 | Zurab Kutsia | Georgia | Mr.Kutso | Bronze | | |
| 107 | Mariam Kobiashvili | Georgia | {-Mari-} | Bronze | | |
| 108 | Fabian Gundlach | Germany | | | | |
| 109 | Max Haslbeck | Germany | | | | |
| 110 | Eike Mueller | Germany | | Bronze | | |
| 111 | Oleg Yuschuk | Germany | | | | |
| 112 | Joel Maafo Budu | Ghana | | + | | |
| 113 | Elias Konadu Awudu | Ghana | | + | | |
| 114 | Priscilla Asare-Debra | Ghana | | + | | |
| 115 | Mena Aba Tanoah Coleman | Ghana | | | | |
| 116 | Gerasimos Arsenis | Greece | marsenis | | | |
| 117 | Georgios Panagiotakos | Greece | pagio | + | | |
| 118 | Georgios Mpitzes | Greece | | | | |
| 119 | Apostolis Gaitanidis | Greece | | | | |
| 120 | Pak Hay Chan | Hong Kong, China | | | | |
| 121 | Wai Hon Law | Hong Kong, China | waihonhon | | | |
| 122 | Chun Chi Tsang | Hong Kong, China | | | | |
| 123 | Man Hin Hon | Hong Kong, China | | Bronze | | |
| 124 | Miklos Danka | Hungary | | Silver | | |
| 125 | Gabor Danner | Hungary | | Bronze | | |
| 126 | Gabor Gevay | Hungary | | | | |
| 127 | Peter Englert | Hungary | | | | |
| 128 | Keshav Dhandhania | India | keshav_57 | | | |
| 129 | Prashant Vasudevan | India | | | | |
| 130 | Adhiraj Somani | India | | | | |
| 131 | Srivatsan Balakrishnan | India | srivatsan_1991 | Bronze | Bronze | |
| 132 | Angelina Veni Johanna | Indonesia | lennie_2nd | | | |
| 133 | Christianto Handojo | Indonesia | handojo1 | | | |
| 134 | Reinardus Surya Pradhitya | Indonesia | Adhit | Bronze | | |
| 135 | Petrus Risan Risan | Indonesia | ptrrsn_1 | Bronze | | |
| 136 | Soheil Ehsani Banafti | Iran | Solej | + | | |
| 137 | Ali BabaeiCheshmehAhmadrezaei | Iran | | | | |
| 138 | Fereshte Khani | Iran | | | | |
| 139 | Pooya Vahidi Ferdowsi | Iran | pooya_ | + | | |
| 140 | Simon Peter Free | Ireland | | | | |
| 141 | David McCarthy | Ireland | | | | |
| 142 | Jared Auty | Ireland | | | | |
| 143 | Brian Walsh | Ireland | | + | | |
| 144 | Rotem Liss | Israel | | | | |
| 145 | Tomer Ezra | Israel | | | | |
| 146 | Yakov Galka | Israel | | | | |
| 147 | Ivgeny Priemovitz | Israel | | | | |
| 148 | Massimo Cairo | Italy | | Silver | Bronze | |
| 149 | Paolo Comaschi | Italy | | Bronze | Bronze | |
| 150 | Maximilian Alber | Italy | | | | |
| 151 | Giovanni Paolini | Italy | | | | |
| 152 | Yuichiro Hirano | Japan | | | | |
| 153 | Kazuhiro Hosaka | Japan | | Gold | | |
| 154 | Makoto Soejima | Japan | rng_58 | Silver | | |
| 155 | Motoki Takigiku | Japan | | Bronze | | |
| 156 | Amir Tulegenov | Kazakhstan | | | | |
| 157 | Madiyar Aitbayev | Kazakhstan | | | | |
| 158 | Darkhan Akzholov | Kazakhstan | | | | |
| 159 | Ali Dautalinov | Kazakhstan | | | | |
| 160 | Dong gu Kang | Korea, Republic of | | | | |
| 161 | Jae Sung Park | Korea, Republic of | | Silver | | |
| 162 | Hyeok Hwa Seong | Korea, Republic of | | | | |
| 163 | Hyung Suk Yoon | Korea, Republic of | | | | |
| 164 | Alaa Ahmad Husain | Kuwait | | + | | |
| 165 | Sultan Waleed Abdullah | Kuwait | | | | |
| 166 | Waleed Khalid Alabdulhadi | Kuwait | | + | | |
| 167 | Eissa Mohammad Almezen | Kuwait | | | | |
| 168 | Astar Bekturov | Kyrgyzstan | | + | | |
| 169 | Aibek Teshebaev | Kyrgyzstan | | | | |
| 170 | Ikromzhon Turgunbaev | Kyrgyzstan | | | | |
| 171 | Kemel Aitmurzaev | Kyrgyzstan | | | | |
| 172 | Martins Frolovs | Latvia | martins256 | + | | |
| 173 | Eduards Kalinicenko | Latvia | eduardische | Bronze | | |
| 174 | Olegs Osmjans | Latvia | | Bronze | + | |
| 175 | Normunds Vilcins | Latvia | nV | | | |
| 176 | Wafa Ahmed Elshibani | Libya | | | | |
| 177 | Isslam Awad Elkasah | Libya | | | | |
| 178 | Shada Saleh Alsiwi | Libya | | | | |
| 179 | Ahmed Mohamed Sahoub | Libya | | | | |
| 180 | Marijonas Petrauskas | Lithuania | | | | |
| 181 | Gediminas Liktaras | Lithuania | | Silver | Bronze | |
| 182 | Martynas Budriunas | Lithuania | | | | |
| 183 | Adas Burksaitis | Lithuania | | + | | |
| 184 | Michael Schnell | Luxembourg | | + | | |
| 185 | Jeff Wagner | Luxembourg | | | | |
| 186 | Jeff Hemmen | Luxembourg | | | | |
| 187 | Gilles Neyens | Luxembourg | | | | |
| 188 | Hoi Meng Lei | Macau, China | | | | |
| 189 | Hou Meng Ip | Macau, China | | + | | |
| 190 | Man Sang Fong | Macau, China | | | | |
| 191 | Wing Yan Leung | Macau, China | | | | |
| 192 | Mladen Dimovski | Macedonia, FYRO | | | | |
| 193 | Deniz Dzhumkar | Macedonia, FYRO | | | | |
| 194 | Gjorgji Janceski | Macedonia, FYRO | | | | |
| 195 | Hristijan Bogoevski | Macedonia, FYRO | | | | |
| 196 | Jorge Alberto Gonzalez | Mexico | Yorchito | | | |
| 197 | Christian Adan Hernandez | Mexico | | | | |
| 198 | Flavio Hernandez | Mexico | | | | |
| 199 | Jose Agustin de Jesus Barrios | Mexico | | | | |
| 200 | Artiom Casapu | Moldova | | | | |
| 201 | Vladimir Cernov | Moldova | | | | |
| 202 | Pavel Gutu | Moldova | | | | |
| 203 | Daniel Mogoreanu | Moldova | | | | |
| 204 | Amar Battulga | Mongolia | | + | + | |
| 205 | Naranbayar Uuganbayar | Mongolia | | | | |
| 206 | Usukhbaatar Dotgonvanchig | Mongolia | | | | |
| 207 | Jamsrandorj Dagvadorj | Mongolia | | | | |
| 208 | David Sebastiaan Venhoek | Netherlands | davidv1992 | Bronze | | |
| 209 | Jelle van den Hooff | Netherlands | decowboy | Silver | | |
| 210 | Raymond van Bommel | Netherlands | | | | |
| 211 | Matthijs Tijink | Netherlands | | | | |
| 212 | Jamie McCloskey | New Zealand | | + | | |
| 213 | Simon Welsh | New Zealand | | | + | |
| 214 | Melby Ruarus | New Zealand | | | | |
| 215 | Boris Pfahringer | New Zealand | | | | |
| 216 | Daniel Amoto Omeiza | Nigeria | | | | |
| 217 | Abdul-Malik Komioluwa Ajenifuja | Nigeria | | | | |
| 218 | Orobosa Osazuwa | Nigeria | | | | |
| 219 | Emmanuel Godswill Johnny | Nigeria | | | | |
| 220 | Tomasz Kociumaka | Poland | | | | |
| 221 | Jakub Pachocki | Poland | | | | |
| 222 | Jaroslaw Blasiok | Poland | | Gold | | |
| 223 | Adam Karczmarz | Poland | | | | |
| 224 | Rafael Schimassek | Portugal | | | | |
| 225 | Pedro Abreu Caldeira | Portugal | pcaldeira | + | | |
| 226 | Francisco Huhn | Portugal | tharis | | | |
| 227 | Cosmin Gheorghe | Romania | gcosmin | Gold | Silver | |
| 228 | Bogdan-Cristian Tataroiu | Romania | bogdan2412 | Bronze | Silver | |
| 229 | Marius Dragus | Romania | mariusdrg | | | |
| 230 | Andrei-Paul Puni | Romania | | | | |
| 231 | Vladislav Epifanov | Russian Federation | Kankuro | Gold | Gold | |
| 232 | Sergey Rogulenko | Russian Federation | SergeiRogulenko | Gold | | |
| 233 | Mikhail Kharitonov | Russian Federation | khm | | | |
| 234 | Sergey Fedorov | Russian Federation | SergeiFedorov | | | |
| 235 | Ugljesa Stojanovic | Serbia | | Bronze | | |
| 236 | Luka Milicevic | Serbia | | | | |
| 237 | Boris Grubic | Serbia | | | | |
| 238 | Aleksa Stankovic | Serbia | | | | |
| 239 | Wei Zhong Lim | Singapore | | Bronze | | |
| 240 | Zhan Xiong Chin | Singapore | | Bronze | | |
| 241 | Jia Han Chiam | Singapore | | Bronze | | |
| 242 | Raymond Seng Ing Kang | Singapore | | | | |
| 243 | Peter Fulla | Slovakia | | Bronze | | |
| 244 | Tomas Belan | Slovakia | | | | |
| 245 | Martin Sramek | Slovakia | | | | |
| 246 | Peter Csiba | Slovakia | | | | |
| 247 | Jacobus Francois Conradie | South Africa | | | | |
| 248 | Schalk Willem Kruger | South Africa | swkrueger | + | | |
| 249 | Graham Richard Manuell | South Africa | | | | |
| 250 | Jacobus Petrus Van der Merwe | South Africa | | | | |
| 251 | Felix Mirave | Spain | FelixMirave | + | + | |
| 252 | Angel Pina | Spain | Pascualino | Bronze | | |
| 253 | Juan Jose Gonzalez | Spain | wmspider | + | | |
| 254 | VГctor Codony | Spain | vcd | | | |
| 255 | Yasith Lahiru Vidanaarachchi | Sri Lanka | | + | + | |
| 256 | Rajith Yashodha Vidanaarachchi | Sri Lanka | | + | + | |
| 257 | Navin Shamendra Gunatillaka | Sri Lanka | | | | |
| 258 | Simon Lindholm | Sweden | | Bronze | | |
| 259 | Arash Rouhani-Kalleh | Sweden | | | | |
| 260 | Rickard Norlander | Sweden | | | | |
| 261 | Rikard Lundmark | Sweden | | | | |
| 262 | Adrian Roos | Switzerland | | + | | |
| 263 | Simon Markus Laube | Switzerland | | | | |
| 264 | Daniel Stefan Graf | Switzerland | | | | |
| 265 | Florian Michael Scheidegger | Switzerland | | | | |
| 266 | Mohammad Asad | Syria | | | | |
| 267 | Kinan Al Sarmini | Syria | | | | |
| 268 | Abdullatif Al Shriaf | Syria | | | | |
| 269 | Amer Sawan | Syria | | | | |
| 270 | Qobil Haqnazarov | Tajikistan | | | | |
| 271 | Behruz Afzali | Tajikistan | | | | |
| 272 | Abdulhakim Ehsonov | Tajikistan | | | | |
| 273 | Dzhamshed Saidov | Tajikistan | | | | |
| 274 | Taksapaun Kittiakrastien | Thailand | | | | |
| 275 | Visit Pataranutaporn | Thailand | spnautilus | Bronze | | |
| 276 | Abhabongse Janthong | Thailand | | Silver | | |
| 277 | Pasin Manurangsi | Thailand | | | | |
| 278 | Baris Kaya | Turkey | | | | |
| 279 | Emre Sunecli | Turkey | | + | | |
| 280 | Ahmet Kerim Senol | Turkey | | | | |
| 281 | Osman Aka | Turkey | | | | |
| 282 | Yhlas Beghanov | Turkmenistan | | | | |
| 283 | Pudak Nurberdiyev | Turkmenistan | | | | |
| 284 | Jemshit Geldiyev | Turkmenistan | | | | |
| 285 | Yevgen Anisimov | Ukraine | | | | |
| 286 | Stepan Palamarchuk | Ukraine | Steps09 | | | |
| 287 | Yaroslav Tverdokhlib | Ukraine | K.A.D.R | | | |
| 288 | Vadym Yanushkevych | Ukraine | | | | |
| 289 | Ahmed Fahed Abdulla Ali | United Arab Emirates | | | | |
| 290 | Husain Ali Salem Aloos | United Arab Emirates | | + | | |
| 291 | Hamad Jassem Alhelo | United Arab Emirates | | | | |
| 292 | Omar Khalifa Al Muhiri | United Arab Emirates | | + | | |
| 293 | David Mestel | United Kingdom | | | | |
| 294 | Deryck Chan | United Kingdom | | | | |
| 295 | Joel Colledge | United Kingdom | | | | |
| 296 | Viktor Konstantinov | United Kingdom | | | | |
| 297 | Neal Wu | United States | neal_wu | Gold | | |
| 298 | Brian Hamrick | United States | Hamster1800 | Silver | | |
| 299 | Travis Hance | United States | tjhance | | | |
| 300 | Wenyu Cao | United States | wcao | | | |
| 301 | Huascar Eduardo Batista Silva | Venezuela | | | | |
| 302 | Gabriel Alfredo Redondo Suarez | Venezuela | | | | |
| 303 | Daniela Isabel Colmenares Mayz | Venezuela | | | | |
| 304 | Mantura Teresa Kabchi Abchi | Venezuela | | | | |
| 305 | An Thanh Nguyen | VietNam | | | | |
| 306 | Hung Ngoc Hoang | VietNam | | | | |
| 307 | Khanh Xuan Nguyen | VietNam | | | | |
| 308 | Liem Duc Nguyen | VietNam | | | | |
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