Problems from Croatian Open Competition in Informatics 2006/2007, contest #4

	Add	Remove

Name	Fastest	Shortest	Total	Acc.	Ratio	Difficulty	Languages
Ispiti	0.06	1400	318	72	23%	6.8Hard	en
Jogurt	0.00	85	154	63	41%	7.6Hard	en
Prsteni	0.00	5	4377	2706	62%	1.6Easy	en
Sibice	0.00	5	24742	13718	55%	1.4Easy	en
Skener	0.00	5	7577	4920	65%	1.4Easy	en
Zbrka	0.01	5	649	209	32%	5.2Medium	en