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	1018	771	76%	4.2Medium	en
Ivana	0.00	319	157	129	82%	4.9Medium	en
Liga	0.00	510	255	157	62%	7.1Hard	en
Natrij	0.00	119	2786	2444	88%	3.1Medium	en
Tenis	0.00	441	410	347	85%	3.9Medium	en
Trik	0.00	31	15629	14962	96%	1.4Easy	en