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

	Add	Remove

Name	Fastest	Shortest	Total	Acc.	Ratio	Difficulty	Languages
Binary search tree	0.02	161	9896	1945	20%	5.0Medium	en
Cross	0.00	1041	1124	346	31%	4.1Medium	en
Kemija	0.00	5	8926	5472	61%	1.6Easy	en
Matrica	0.01	1210	92	22	24%	6.8Hard	en
Najkraci	0.34	1006	149	52	35%	7.0Hard	en
Pet	0.00	5	31221	17551	56%	1.3Easy	en