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	636	572	90%	2.5Easy	en
Oop	0.44	1326	141	46	33%	8.7Hard	en
Perica	0.01	119	442	376	85%	4.1Medium	en
Podnizovi	0.04	980	25	10	40%	8.1Hard	en
Poplava	0.02	117	191	164	86%	4.2Medium	en
Zamka	0.00	61	10471	10039	96%	1.4Easy	en