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	9279	1829	20%	5.9Hard	en
Cross	0.00	1041	1101	339	31%	4.2Medium	en
Kemija	0.00	5	8832	5423	61%	1.7Easy	en
Matrica	0.01	1210	76	22	29%	6.6Hard	en
Najkraci	0.34	1006	133	52	39%	7.0Hard	en
Pet	0.00	5	30448	17238	57%	1.4Easy	en