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

	Add	Remove

Name	Shortest	Authors	Full Solves	Ratio	Difficulty	Languages
Ljutnja	114	772	581	75%	5.9Hard	en
Sretan	40	572	485	85%	2.8Medium	en
Žabe	1083	42	14	33%	8.4Hard	en