视频链接：C122李超树合并+DPCF932FEscapeThroughLeaf_哔哩哔哩_bilibili   C65【模板】线段树合并P4556[Vani有约会]雨天的尾巴-董晓-博客园(cnblogs.com)CF932FEscapeThroughLeaf#include<iostream>#include<cstring>#include<algorithm>using