Method addEdge

src/class122/Code01_MaxFlow1.java:57–61

(int u, int v)

	}

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

	public static void dfs1(int u, int f) {
		deep[u] = deep[f] + 1;