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	3424	3169	93%	1.8Easy	en
Cudak	0.00	502	316	233	74%	5.5Hard	en
Dejavu	0.00	110	526	461	88%	2.7Easy	en
Oktalni	0.00	20	1656	1548	93%	1.7Easy	en
Redoks	0.23	1083	44	27	61%	7.9Hard	en
Tajna	0.00	91	1265	1167	92%	2.0Easy	en