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

	Add	Remove

Name	Shortest	Authors	Full Solves	Ratio	Difficulty	Languages
Ljutnja	114	820	632	77%	4.8Medium	en
Sretan	40	582	496	85%	2.7Easy	en
Žabe	1083	44	15	34%	8.6Hard	en