Problems from Croatian Open Competition in Informatics 2010/2011, contest #1

	Add	Remove

Name	Shortest	Authors	Full Solves	Ratio	Difficulty	Languages
Ljutnja	114	720	548	76%	5.2Medium	en
Sretan	40	569	481	85%	2.9Medium	en
Žabe	1083	41	14	34%	8.1Hard	en