Method addEdge

src/class195/Code03_Road1.java:47–52

(int u, int v, int w)

	public static PriorityQueue<int[]> heap = new PriorityQueue<>((a, b) -> a[2] - b[2]);

	public static void addEdge(int u, int v, int w) {
		nxt[++cntg] = head[u];
		to[cntg] = v;
		weight[cntg] = w;
		head[u] = cntg;
	}

	public static int buildOut(int l, int r) {
		int rt;