Network Utility — 8x8

> send 0,0 7,7 Routing failed: Node (4,0) is down — path blocked

# 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)) 8x8 network utility

return path, "Success"