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Solution: Number of Spaces Cleaning Robot Cleaned

Explore how to simulate a cleaning robot moving in a 2D grid, tracking its position and direction with bitwise operations. Understand when the robot stops, avoid infinite loops, and calculate the number of unique spaces cleaned efficiently without extra memory. This lesson guides you through solving matrix navigation problems using algorithmic patterns and in-place modifications.

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 ...