A Wonderful Chocolate

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A few days ago Chef decided to cook a new dish – chocolate. This must be something amazing. The idea is that chocolate bar will be divided into cells. It must be long, but narrow. To interest customers every bar must be unique. Bar will consist of cells of black or white chocolate. In addition every bar must be good looking. It means that the bar must not contain any totally white or totally black

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solution.cppC++17

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