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	10163	5951	59%	1.6Easy	en
Mjehuric	0.00	69	8500	4479	53%	1.6Easy	en
Periodni	0.00	1578	92	28	30%	7.3Hard	en
Rot	0.00	340	527	209	40%	3.1Medium	en
Slikar	0.01	1082	198	84	42%	4.6Medium	en
Trezor	0.00	990	109	28	26%	5.7Hard	en