Conveyor Belt

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Alice is fascinated by conveyor belts and often comes up with imaginary problems involving them. Today, she imagines the conveyor belt as a $2*N$ binary matrix, with rows numbered from $1$ to $2$ from top to bottom, and columns numbered from $1$ to $N$ from left to right. The matrix moves every second, following the normal conveyor belt motion. More formally, if we represent the matrix by $M$, i

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solution.cppC++17

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