Problems from Croatian Open Competition in Informatics 2006/2007, contest #5

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Name	Fastest	Shortest	Authors	Full Solves	Ratio	Difficulty	Languages
Dvaput	0.02	473	1083	825	76%	4.2Medium	en
Ivana	0.00	319	165	138	84%	4.6Medium	en
Liga	0.00	510	256	158	62%	7.0Hard	en
Natrij	0.00	119	2919	2557	88%	2.9Medium	en
Tenis	0.00	441	416	353	85%	3.7Medium	en
Trik	0.00	31	15945	15263	96%	1.3Easy	en