Yaroslav Andrey Roman love playing cube sometimes play cube hour hour today get play cube Yaroslav take unit cube compose aaa cube Andrey bbb cube roman ccc cube after game finish guy leave but later Vitaly enter room he see cube want cube but size cube of course large cube length abc besides Vitaly decide decompose cube build Yaroslav Andrey Roman compose large cube however turn unit cube get destroy cube were not large cube we know Vitaly short exactly n cube Vitaly got upset demolish left as leave meet Petya tell cubes room need n unit cube large cubePetya enter room see messily scatter cube he want neat orderly but know cubes small unit cube Vitaly need n unit cube large help Petya understand way size b c restore Yaroslavs Andreys Romans cube