翻译的初衷以及为什么选择<Entity Framework 6 Recipes>来学习,请看本系列开篇 2-8 Table per Type Inheritance 建模 问题 你有这样一张数据库表,它包含一些额外的信息,这些信息来到一张公共的表.你想使用Table per Type Inheritance(TPT)继承映射建模. 解决方案 假设你有两张表与一张公共的表密切相关,如图2-17所示,Businiss表与eCommerce表.Retail表有1:0...1关系.最关键的是,eCo
构建:像线性的莫队那样,依旧是按sqrt(n)为一块分块. int dfs(int x){ ; dfn[x]=++ind; ;i<=;i++) if (bin[i]<=deep[x]) fa[x][i]=fa[fa[x][i-]][i-]; else break; for (int i=first[x];i;i=next[i]){ int pur=go[i]; ]){ fa[pur][]=x; deep[pur]=deep[x]+; size+=dfs(pur); if (size>=b
Life Forms Time Limit: 5000MS Memory Limit: 65536K Total Submissions: 12483 Accepted: 3501 Description You may have wondered why most extraterrestrial life forms resemble humans, differing by superficial traits such as height, colour, wrinkles, e
The Water Bowls Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 5329 Accepted: 2081 Description The cows have a line of 20 water bowls from which they drink. The bowls can be either right-side-up (properly oriented to serve refreshing
网址:https://vjudge.net/contest/66965#overview 第一题: poj1251 裸最小生成树 #include<iostream> #include<algorithm> #include<cstring> using namespace std; const int maxn=100500; struct node { int x; int y; int w; }a[maxn]; int n,k; char s,v; int cnt
