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1041. Robot Bounded In Circle On an infinite plane, a robot initially stands at (0, 0) and faces north. The robot can receive one of three instructions: “G”: go straight 1 unit; “L”: turn 90 degrees to the left; “R”: turn 90 degrees to the right. The robot performs the instructions given in order, and repeats them forever. Return true if and only if there exists a circle in the plane such that the robot never leaves the circle. ...