树状数组 2 ：区间修改，单点查询

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	ZXL	207ms	2.5 MiB	C++11	795 Bytes	2022-8-16 21:39:44
AC	mibbp	229ms	1016 KiB		673 Bytes	2022-8-1 23:04:08
AC	oyf	246ms	2.5 MiB	C++11	1020 Bytes	2022-9-1 11:29:30
AC	mibbp	247ms	1.7 MiB		679 Bytes	2022-8-1 23:03:54
AC	田峻麟	257ms	2 MiB	C++11	816 Bytes	2024-1-30 20:11:37
AC	AiraKeq	567ms	2.8 MiB	C++11	731 Bytes	2025-3-2 15:45:52
AC	lionsong	931ms	3.2 MiB	C++11	676 Bytes	2022-9-2 14:45:59
AC	mibbp	2637ms	7.9 MiB		593 Bytes	2022-8-1 22:57:07
AC	mibbp	2713ms	4.2 MiB		580 Bytes	2022-8-1 22:55:53