Method build

src/class122/Code01_MaxFlow1.java:50–55

(int n)

	public static int[][] stjump = new int[MAXN][LIMIT];

	public static void build(int n) {
		power = log2(n);
		Arrays.fill(num, 1, n + 1, 0);
		cnt = 1;
		Arrays.fill(head, 1, n + 1, 0);
	}

	public static void addEdge(int u, int v) {
		next[cnt] = head[u];