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Solution: Number of Spaces Cleaning Robot Cleaned

Understand how to simulate a cleaning robot's movement in a 2D binary matrix. Explore the logic to track each unique cleaned space by monitoring the robot's direction and position using bitwise manipulation. Learn to detect loop conditions that signal when the robot revisits a space facing the same direction and stops moving, while managing time and space complexity efficiently.

Statement

You are given a 0-indexed 2D binary matrix, room, representing a room of size m×nm \times n. In this matrix, 00 represents an empty space, while 11 represents a space occupied by an object. The top-left corner of the room is always empty ...