一些不错的东西[持续更新]

线段树:

讲解:https://blog.csdn.net/zearot/article/details/48299459

视频介绍:https://www.bilibili.com/video/BV1QT4y1Z7rR?from=search&seid=12466859942766325431&spm_id_from=333.337.0.0

 内存泄漏和内存溢出

https://www.cnblogs.com/rgever/p/8899758.html