摘要：During tea-drinking, princess, amongst other things, asked why has such a good-natured and cute Dragon imprisoned Lpl in the Castle? Dragon smiled eni 阅读全文

摘要：///支持查询和区间的单值修改 #include using namespace std; const int N=1e6+10; int n,a[N],m; int sumv[N>1; build(o>1; if(q>1; if(qlmid)ans+=querysum(o using namespace std; const int N=1e6+10; int n,a... 阅读全文