Method edge

src/class201/Code07_Network1.java:176–180

(int x, int y)

	}

	public static long edge(int x, int y) {
		int a = Math.min(x, y);
		int b = Math.max(x, y);
		return (1L * a) << 32 | b;
	}

	public static void connect(int c, int x, int y) {
		int u = node(c, x);