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Mathematics, 24.09.2019 05:30 yuni31

Дан клетчатый квадрат 10x10. можно ли закрасить 10 клеток так, чтобы любой прямоугольник 2x5 со сторонами, параллельными сторонам квадрата, составленный из клеток, содержал бы хоть одну закрашенную клетку?

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Дан клетчатый квадрат 10x10. можно ли закрасить 10 клеток так, чтобы любой прямоугольник 2x5 со стор...
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