Method up

src/class201/Code07_Network1.java:46–48

(int x)

	public static HashMap<Long, Integer> edgeColor = new HashMap<>();

	public static void up(int x) {
		maxv[x] = Math.max(Math.max(maxv[ls[x]], maxv[rs[x]]), arr[x]);
	}

	public static boolean isroot(int x) {
		return ls[fa[x]] != x && rs[fa[x]] != x;