Problems from Baltic Olympiad in Informatics 2018, practice session

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Name	Fastest	Shortest	Authors	Full Solves	Ratio	Difficulty	Languages
Citations	0.02	810	8	6	75%	1.4 - 6.0Hard	en et is ja lv pl ru
Ninety-nine	0.00	164	39	32	82%	1.2 - 3.0Medium	en et is ja lv pl ru
Simple Arithmetic	0.00	74	33	30	91%	1.2 - 4.6Medium	en et is ja lv pl ru sv