Andrew and the Balls

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Andrew likes colored balls very much. He has N different colors of balls, all colors are numbered from 1 to N, inclusive. There are C1 balls of the first color, C2 balls of the second color, ..., CN balls of the Nth color. All balls of the same color are identical. Now he wants to arrange all the balls in a row in such a way that no two consecutive balls have the same color. But he wonders in ho

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solution.cppC++17

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