대회장소풀 수 있는 문제총 문제
CEOI 2018Warsaw, Poland56
CEOI 2017ljubljana, Slovenia66
CEOI 2016Piatra-Neamț, Romania311
CEOI 2015Brno, Czech Republic1616
CEOI 2014Jena, Germany06
CEOI 2013Primošten, Croatia1414
CEOI 2012Tata, Hungary05
CEOI 2011Gdynia, Poland66
CEOI 2010Košice, Slovakia06
CEOI 2009Târgu Mureş, Romania55
CEOI 2008Dresden, Germany05
CEOI 2007Brno, Czech Republic04
CEOI 2006Vrsar, Croatia55
CEOI 2005Sárospatak, Hungary15
CEOI 2004Rzeszów, Poland07
CEOI 2003Münster, Germany44
CEOI 2002Košice, Slovakia56
CEOI 2001Zalaegerszeg, Hungary04
CEOI 2000Cluj-Napoca, Romania00
CEOI 1999Brno, Czech Republic26
CEOI 1998Zadar, Croatia36
CEOI 1997Nowy Sącz, Poland06