8x8 Network Utility -

# move in Y direction step_y = 1 if ty > y else -1 while y != ty: y += step_y if self.nodes[(x, y)] != "up": return None, f"Node (x,y) is down — path blocked" path.append((x, y))

> down 4,0 Node (4,0) is now down

class MeshNetwork: def (self, size=8): self.size = size self.nodes = {} for x in range(size): for y in range(size): self.nodes[(x, y)] = "up" # all nodes initially up 8x8 network utility

# move in X direction step_x = 1 if tx > x else -1 while x != tx: x += step_x if self.nodes[(x, y)] != "up": return None, f"Node (x,y) is down — path blocked" path.append((x, y)) # move in Y direction step_y = 1