IOI
International Olympiad in Informatics – Statistics
United
Year
ContestantCountryTasksScoreRankAward
Abs.Rel.Abs.Rel.
2024Samuel TrajtenbergUnited Kingdom10051.7059310082.0395.7065.95%17/35395.47%Gold
Hanks ChongUnited Kingdom8269.7128310064.0346.7157.78%42/35388.39%Silver
Adavya GoyalUnited Kingdom10039.1210310026.5278.6246.44%106/35370.25%Bronze
Anango PrabhatUnited Kingdom8230.331033743.0205.3334.22%190/35346.46%Honourable Mention
2023Erekle RoinishviliUnited Kingdom838535.52310045371.561.92%16/35095.71%Gold
Hanks ChongUnited Kingdom294035.5316516216.536.08%100/35071.71%Bronze
Samuel TrajtenbergUnited Kingdom174014.0316516183.030.50%142/35059.71%Bronze
Akshaiyram ReguramUnited Kingdom
2022Erekle RoinishviliUnited Kingdom46100.041882.0455.00305.0450.84%61/34982.81%Silver
Hanks ChongUnited Kingdom5356.0412210.0055.00237.0039.50%101/34971.35%Bronze
Ojas GulatiUnited Kingdom380.00010.0050.00143.0023.83%179/34949.00%Honourable Mention
Toby CollinsUnited Kingdom1230.04010.0018.4074.4012.40%252/34928.08%
2021Erekle RoinishviliUnited Kingdom403715100114624941.50%122/35165.53%Bronze
James TanUnited Kingdom403715100242123739.50%132/35162.68%Bronze
Antoni PilatUnited Kingdom113715100114622036.67%147/35158.40%Bronze
Benedek SzilvasyUnited Kingdom395100113316126.83%257/35127.07%
2020Euan OngUnited Kingdom09641980.43100.00326.4354.41%91/34373.76%Bronze
Aron ThomasUnited Kingdom59611980.43100.00301.4350.24%116/34366.47%Bronze
James TanUnited Kingdom1996112180.7165.33293.0448.84%123/34364.43%Bronze
Kevin LeeUnited Kingdom510025956.7865.32261.1043.52%150/34356.56%Bronze
2019Benedict Randall ShawUnited Kingdom10018070.741000288.7448.12%120/32763.61%Bronze
Zachary SmithUnited Kingdom45405061.156610272.1545.36%140/32757.49%Bronze
Euan OngUnited Kingdom45181544.496610198.4933.08%221/32732.72%
Arthur ConmyUnited Kingdom2518012.004124120.0020.00%280/32714.68%
2018Shaun MarshallUnited Kingdom10017498603628848.00%71/33579.10%Silver
Basim KhajwalUnited Kingdom10017496113621936.50%135/33560.00%Bronze
Harvey YauUnited Kingdom1005010011021636.00%141/33558.21%Bronze
Fox ThomsonUnited Kingdom97170630418130.17%172/33548.96%
2017Joseph BentonUnited Kingdom83.811000100.0051100434.8172.47%6/30498.36%Gold
Thomas ReadUnited Kingdom87.86452797.51050307.3751.23%39/30487.50%Silver
Neel NandaUnited Kingdom28.0955090.00050223.0937.18%98/30468.09%Bronze
Euan TebbuttUnited Kingdom29.662015100.00050214.6635.78%103/30466.45%Bronze
2016Lawrence HollomUnited Kingdom10011090100430550.83%90/30871.10%Bronze
Joseph BentonUnited Kingdom1000059100025943.17%130/30858.12%Bronze
Basim KhajwalUnited Kingdom461108038017529.17%205/30833.77%
Matthew HillmanUnited Kingdom461105938015425.67%215/30830.52%
2015Joseph BentonUnited Kingdom10071.42341001000405.4267.57%39/32288.20%Silver
Rowan LeeUnited Kingdom1071.423417200152.4225.40%186/32242.55%
Zhenxian YangUnited Kingdom3533.33017360121.3320.22%210/32235.09%
David ShahUnited Kingdom2045.45017360118.4519.74%214/32233.85%
2014Ralph LindenUnited Kingdom30010010035026544.17%119/31162.06%Bronze
Cheng SunUnited Kingdom3001510035718731.17%176/31143.73%
Thomas HartleyUnited Kingdom30805516010918.17%219/31129.90%
Yuren ZhangUnited Kingdom880016477913.17%252/31119.29%
2013Andrew CarlottiUnited Kingdom1007155100906347979.83%26/29991.64%Silver
Toby Cathcart BurnUnited Kingdom100100010014031452.33%97/29967.89%Bronze
Saravanan SathyanandhaUnited Kingdom18295510014021636.00%150/29950.17%
James ClarkeUnited Kingdom0694628109916.50%226/29924.75%
2012Andrew CarlottiUnited Kingdom100010001004934958.17%33/31089.68%Silver
Andrew WillsUnited Kingdom86060039018530.83%117/31062.58%Bronze
Robin ElliottUnited Kingdom592060320017128.50%139/31055.48%Bronze
Zhaoxin WangUnited Kingdom590123201712020.00%190/31039.03%
2011Diggory BlakeUnited Kingdom02142100268327245.33%149/30351.16%Bronze
Robin George LeeUnited Kingdom6943420265223238.67%185/30339.27%
Sean QuahUnited Kingdom4921170269020333.83%199/30334.65%
Cheng SunUnited Kingdom492168003417228.67%220/30327.72%
2010Diggory BlakeUnited Kingdom10075804510050585055868.05%135/29754.88%Bronze
James StanleyUnited Kingdom1005060971005046050361.34%171/29742.76%
Joseph HermaszewskiUnited Kingdom1005040551005035043052.44%199/29733.33%
Sunoo Eleanor ParkUnited Kingdom100502001001009037946.22%226/29724.24%
2009Deryck ChanUnited Kingdom1181001001001009843654.50%107/30164.78%Bronze
Joel ColledgeUnited Kingdom21010010010010001543654.50%107/30164.78%Bronze
David MestelUnited Kingdom
Viktor KonstantinovUnited Kingdom
2008Wiktor JakubiukUnited Kingdom4805070100026844.67%46/28384.10%Silver
Miroslaw MichalskiUnited Kingdom1005508100026343.83%49/28383.04%Silver
Frederick MannersUnited Kingdom10670688523038.33%69/28375.97%Silver
Thomas SpurlingUnited Kingdom
2007Long PhamUnited Kingdom8002510050025542.50%88/28569.47%Bronze
Peter CalvertUnited Kingdom2064403450020834.67%128/28555.44%Bronze
Richard HallUnited Kingdom
Matthew MartinUnited Kingdom
2006Ryan LothianUnited Kingdom10062288004331352.17%76/28273.40%Bronze
Rubin XuUnited Kingdom10059394501926243.67%107/28262.41%Bronze
Andrew RouseUnited Kingdom
Rodrigo QueiroUnited Kingdom
2005Mark ThompsonUnited Kingdom10050100501006546577.50%34/27688.04%Silver
Ryan LothianUnited Kingdom
Thomas BickleyUnited Kingdom
Henry HallamUnited Kingdom
2004Paul JefferysUnited Kingdom80100901001009556594.17%1/291100.00%Gold
Mark ThompsonUnited Kingdom4010030957010043572.50%28/29190.72%Silver
Adam BullUnited Kingdom80505095609042570.83%33/29189.00%Silver
Tim GordonUnited Kingdom
2003Paul JefferysUnited Kingdom757549.485.51040334.955.82%29/26589.43%Silver
Mark ThompsonUnited Kingdom1001550.086.5028279.546.58%54/26580.00%Silver
Adam BullUnited Kingdom
Giles EdkinsUnited Kingdom
2002Paul JefferysUnited Kingdom10312522838.00%68/27675.72%Silver
Nicholas KrempelUnited Kingdom9011020033.33%85/27669.57%Bronze
Adam BullUnited Kingdom1214016126.83%117/27657.97%Bronze
Adam LangleyUnited Kingdom
2001Richard Gregory SmithUnited Kingdom42771.17%10/27296.69%Gold
Nicholas KrempelUnited Kingdom32954.83%40/27285.66%Silver
Ruari O'SullivanUnited Kingdom14924.83%133/27251.47%Bronze
Richard ColesUnited Kingdom
2000Thomas James Barnet-LambUnited Kingdom48068.57%35/27887.77%Silver
Thomas Michael GarnettUnited Kingdom37052.86%81/27871.22%Bronze
Richard Gregory SmithUnited Kingdom35951.29%89/27868.35%Bronze
Matthew ChamberlainUnited Kingdom
1999Tomasz CzajkaUnited Kingdom35058.33%19/25392.89%Gold
Thomas Michael GarnettUnited Kingdom29949.83%35/25386.56%Silver
James ShottonUnited Kingdom20033.33%81/25368.38%Bronze
Thomas James Barnet-LambUnited Kingdom14023.33%122/25352.17%Bronze
1998Mohan GanesalingamUnited Kingdom64091.43%21/24191.70%Gold
Nick JonesUnited Kingdom47067.14%71/24170.95%Bronze
James LingardUnited Kingdom40057.14%92/24162.24%Bronze
Luke HalliwellUnited Kingdom25035.71%133/24145.23%
1997Mohan GanesalingamUnited Kingdom6208516906127846.33%62/22172.40%Bronze
Robert BradyUnited Kingdom020781504019833.00%113/22149.32%
Stephen WilliamsUnited Kingdom036190384013322.17%151/22132.13%
Simon NickersonUnited Kingdom401220039011118.50%161/22127.60%
1996Richard Michael AndersonUnited Kingdom14974.50%57/22074.55%Bronze
Alex EvansUnited Kingdom14874.00%58/22074.09%Bronze
Andrew CookeUnited Kingdom8140.50%134/22039.55%
Justin Santa BarbaraUnited Kingdom7939.50%140/22036.82%
1995Patrick SmearsUnited Kingdom30282330274017889.00%2/21099.52%Gold
Justin Santa BarbaraUnited Kingdom1581624232811457.00%67/21068.57%Bronze
Lev BishopUnited Kingdom001426845226.00%148/21030.00%
David ArmstrongUnited Kingdom009011163618.00%168/21020.48%
1992John SullivanUnited Kingdom19396.50%20/17188.89%Silver
Richard ForsterUnited Kingdom15678.00%60/17165.50%Bronze
Antony RixUnited Kingdom12562.50%81/17153.22%Bronze
Peter ClarkeUnited Kingdom
1991David WalkerUnited Kingdom953613165.50%22/6869.12%Bronze
Edward SheldonUnited Kingdom962111758.50%29/6858.82%Bronze
Antony RixUnited Kingdom76229849.00%46/6833.82%
1990AnsellUnited Kingdom
Angus CampbellUnited Kingdom
OakleyUnited Kingdom
SandersUnited Kingdom