Problems from Croatian Open Competition in Informatics 2007/2008, contest #2

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Name	Fastest	Shortest	Authors	Full Solves	Ratio	Difficulty	Languages
Bijele	0.00	30	21563	20793	96%	1.2Easy	en
Crne	0.00	6	1552	1351	87%	2.5Easy	en
Kemija	0.00	320	365	105	29%	8.4Hard	en
Pravokutni	0.14	377	85	67	79%	6.2Hard	en
Prva	0.00	75	1692	1613	95%	1.6Easy	en
Turbo	0.01	221	1520	1243	82%	4.2Medium	en