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	336	75	22%	6.4Hard	en
Jogurt	0.00	85	168	65	39%	7.6Hard	en
Prsteni	0.00	5	4599	2828	61%	1.6Easy	en
Sibice	0.00	5	25826	14232	55%	1.4Easy	en
Skener	0.00	5	8285	5276	64%	1.5Easy	en
Zbrka	0.01	5	687	222	32%	5.2Medium	en