视频链接： [ARC069F]Flags-洛谷|计算机科学教育新生态(luogu.com.cn)//D462-SAT+线段树优化+二分O(nlognlogv)#include<iostream>#include<cstring>#include<algorithm>usingnamespacestd;#definemid((l+r)>>1)#definels(u<<1)#definer