Zombie City Escape

Problem description: It’s all horror again. You find yourself in a city dotted with skyscrapers, and there’s been a zombie apocalypse. Fortunately, they stay out of these buildings. But that still means you can step out of your house. You are in one corner of the city which is a rectangular grid (matrix) of size R x C, with a building at each point. You know the number of floors of the building