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	396	326	82%	4.0Medium	en
Avion	0.00	40	5440	5197	96%	1.4Easy	en
Dugovi	0.02	795	87	59	68%	6.9Hard	en
Hrpa	0.00	64	73	59	81%	5.2Medium	en
Parket	0.00	71	571	523	92%	2.1Easy	en
Prosjek	0.00	76	133	102	77%	4.3Medium	en