Joker and Batman

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During a fight with the Joker, Batman's eyes lose the capability to distinguish between some pairs of colors. Each color has an integer ID from $1$ to $N$. There are $M$ lists where each color belongs to exactly one list. Batman can distinguish colors belonging to different lists, but he cannot distinguish colors belonging to the same list. Given a strip of $L$ colors, find the different number

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solution.cppC++17

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