题面 戳我 Sol 右偏树滑稽+并查集 再在全局开一个可删除的堆(priority_queue) 注意细节 # include <bits/stdc++.h> # define RG register # define IL inline # define Fill(a, b) memset(a, b, sizeof(a)) using namespace std; typedef long long ll; const int _(3e5 + 10); IL ll Read(){ RG ll…
linq to sql 实现左(右)连接,那个方法是对的var query2 = from tb0 in db.table_0 join tb1 in db.table_1 on table_0.关联键 equals table_1.关联键 into all from tb2 in all.DefaultIfEmpty() select new { ... };下面是另一方法...... 左连接left outer join,除了满足连接条件的行,还包括左表的所有行.右连接right o…