Problems from Croatian Open Competition in Informatics 2008/2009, contest #3

	Add	Remove

Name	Fastest	Shortest	Total	Acc.	Ratio	Difficulty	Languages
Binary search tree	0.01	161	10034	1990	20%	5.1Medium	en
Cross	0.00	1041	1145	349	30%	4.1Medium	en
Kemija	0.00	5	8994	5509	61%	1.6Easy	en
Matrica	0.01	1210	100	22	22%	7.0Hard	en
Najkraci	0.34	1006	153	53	35%	6.8Hard	en
Pet	0.00	5	31433	17669	56%	1.3Easy	en