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	1015	769	76%	4.2Medium	en
Ivana	0.00	319	157	129	82%	4.9Medium	en
Liga	0.00	510	252	154	61%	7.2Hard	en
Natrij	0.00	119	2753	2418	88%	2.7Easy	en
Tenis	0.00	441	410	347	85%	3.9Medium	en
Trik	0.00	31	15583	14918	96%	1.4Easy	en