Method up

src/class111/Code03_SquareRoot.java:31–34

(int i)

	public static long[] max = new long[MAXN << 2];

	public static void up(int i) {
		sum[i] = sum[i << 1] + sum[i << 1 | 1];
		max[i] = Math.max(max[i << 1], max[i << 1 | 1]);
	}

	public static void build(int l, int r, int i) {
		if (l == r) {