대회장소풀 수 있는 문제총 문제
CEOI 2020Nagyakanizsa, Hungary66
CEOI 2019Bratislava, Slovakia99
CEOI 2018Warsaw, Poland66
CEOI 2017ljubljana, Slovenia66
CEOI 2016Piatra-Neamț, Romania1212
CEOI 2015Brno, Czech Republic1616
CEOI 2014Jena, Germany46
CEOI 2013Primošten, Croatia1515
CEOI 2012Tata, Hungary15
CEOI 2011Gdynia, Poland77
CEOI 2010Košice, Slovakia66
CEOI 2009Târgu Mureş, Romania56
CEOI 2008Dresden, Germany56
CEOI 2007Brno, Czech Republic1415
CEOI 2006Vrsar, Croatia66
CEOI 2005Sárospatak, Hungary46
CEOI 2004Rzeszów, Poland77
CEOI 2003Münster, Germany44
CEOI 2002Košice, Slovakia56
CEOI 2001Zalaegerszeg, Hungary04
CEOI 2000Cluj-Napoca, Romania00
CEOI 1999Brno, Czech Republic26
CEOI 1998Zadar, Croatia36
CEOI 1997Nowy Sącz, Poland06