Chef and Robot

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A robot is initially at $(0,0)$ on the cartesian plane. It can move in 4 directions - up, down, left, right denoted by letter u, d, l, r respectively. More formally: - if the position of robot is $(x,y)$ then u makes it $(x,y+1)$ - if the position of robot is $(x,y)$ then l makes it $(x-1,y)$ - if the position of robot is $(x,y)$ then d makes it $(x,y-1)$ - if the position of robot is $(x,y)

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solution.cppC++17

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