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

	Add	Remove

Name	Fastest	Shortest	Authors	Full Solves	Ratio	Difficulty	Languages
Binary search tree	0.01	161	2161	1121	52%	5.0Medium	en
Cross	0.00	1041	372	292	78%	4.1Medium	en
Kemija	0.00	26	5432	5131	94%	1.6Easy	en
Matrica	0.01	1210	36	24	67%	6.1Hard	en
Najkraci	0.33	1006	48	34	71%	7.0Hard	en
Pet	0.00	39	17106	16336	95%	1.3Easy	en