New Year and Domino

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They say "years are like dominoes, tumbling one after the other". But would a year fit into a grid? I don't think so. Limak is a little polar bear who loves to play. He has recently got a rectangular grid with h rows and w columns. Each cell is a square, either empty (denoted by '.') or forbidden (denoted by '#'). Rows are numbered 1 through h from top to bottom. Columns are numbered 1 through w

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solution.cppC++17

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