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

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Name	Fastest	Shortest	Authors	Full Solves	Ratio	Difficulty	Languages
Cetiri	0.00	59	3322	3077	93%	1.8Easy	en
Cudak	0.00	502	296	215	73%	6.3Hard	en
Dejavu	0.00	110	505	439	87%	3.0Medium	en
Oktalni	0.00	20	1635	1528	93%	1.7Easy	en
Redoks	0.23	1083	40	26	65%	7.2Hard	en
Tajna	0.00	91	1232	1137	92%	2.0Easy	en