Method subtreeSum

src/class161/Code01_HLD1.java:275–277

(int x)

	// x的子树上，查询所有节点的累加和
	public static long subtreeSum(int x) {
		return query(dfn[x], dfn[x] + siz[x] - 1, 1, n, 1);
	}

	public static void main(String[] args) throws IOException {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));