Method up

src/class161/Code01_HLD1.java:179–181

(int i)

	}

	public static void up(int i) {
		sum[i] = (sum[i << 1] + sum[i << 1 | 1]) % MOD;
	}

	public static void lazy(int i, long v, int n) {
		sum[i] = (sum[i] + v * n) % MOD;