Problems from Croatian Open Competition in Informatics 2015/2016, contest #5

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Name	Fastest	Shortest	Authors	Full Solves	Ratio	Difficulty	Languages
Multigram	0.00	114	644	580	90%	2.4Easy	en
Oop	0.44	1326	141	48	34%	8.6Hard	en
Perica	0.01	119	517	451	87%	3.6Medium	en
Podnizovi	0.04	980	24	10	42%	7.6Hard	en
Poplava	0.02	117	191	165	86%	4.1Medium	en
Zamka	0.00	61	10699	10259	96%	1.4Easy	en