Problems from Croatian Open Competition in Informatics 2008/2009, contest #4

	Add	Remove

Name	Fastest	Shortest	Total	Acc.	Ratio	Difficulty	Languages
Datum	0.00	5	10208	5979	59%	1.5Easy	en
Mjehuric	0.00	69	8529	4493	53%	1.7Easy	en
Periodni	0.00	1578	93	28	30%	7.3Hard	en
Rot	0.00	340	536	211	39%	3.1Medium	en
Slikar	0.01	1082	209	87	42%	4.8Medium	en
Trezor	0.00	990	110	28	25%	5.6Hard	en