Problems from Croatian Open Competition in Informatics 2010/2011, contest #4

	Add	Remove

Name	Fastest	Shortest	Authors	Full Solves	Ratio	Difficulty	Languages
Astro	0.00	356	385	316	82%	4.1Medium	en
Avion	0.00	40	5349	5108	95%	1.4Easy	en
Dugovi	0.02	795	83	56	67%	6.9Hard	en
Hrpa	0.00	64	65	52	80%	4.7Medium	en
Parket	0.00	71	561	513	91%	2.1Easy	en
Prosjek	0.00	76	118	91	77%	5.2Medium	en