Problems from Croatian Open Competition in Informatics 2007/2008, contest #3

	Add	Remove

Name	Fastest	Shortest	Authors	Full Solves	Ratio	Difficulty	Languages
Cetiri	0.00	59	3339	3092	93%	1.8Easy	en
Cudak	0.00	502	299	215	72%	6.3Hard	en
Dejavu	0.00	110	507	441	87%	2.9Medium	en
Oktalni	0.00	20	1639	1531	93%	1.7Easy	en
Redoks	0.23	1083	39	26	67%	7.2Hard	en
Tajna	0.00	91	1241	1145	92%	2.0Easy	en