目录 Codeforces 7E - Defining Macros 题解 前言 做法 程序 结尾 Codeforces 7E - Defining Macros 题解 前言 开始使用博客园了,很想写点东西.(逃 这是一道Codeforces题目. 做法 一道大模拟 相信大家都看得懂题目意思,我就不赘述了. 首先我们读进来\(n\)行,对于每一行,我们把它初步分成一下四块内容: #号 define 宏的名字 宏的表达式 注意:#和define中间可能会有空格,define和宏的名字,宏的名字和宏…

Link:http://codeforces.com/problemset/problem/7/E Brief Introduction:一个表达式由多个“Macros”组成,每个Macro都为一个整体,如果最终的表达式使得运算顺序发生改变则称该表达式不安全 给你多个Macros和最终的表达式,询问该表达式是否安全 Algorithm: 要判断最终的表达式是否安全,就是要看其中的每个Macro是否安全,同时每一个运算符是否会使其整个变得不安全 我们发现要判断每个Macro的安全性也要经过同样的过…

Codeforces 7E #include <iostream> #include <cstring> #include <cstdio> #include <algorithm> #include <map> using namespace std; map<string,int> Map; int KASE; string Str,t; ]; inline int Get(int l,int r) { ; ;i>=l;i-…

Background C++ is one of the main development languages used by many of Google's open-source projects. As every C++ programmer knows, the language has many powerful features, but this power brings with it complexity, which in turn can make code more…

Google C++ Style Guide   Table of Contents Header Files Self-contained Headers The #define Guard Forward Declarations Inline Functions Names and Order of Includes Scoping Namespaces Unnamed Namespaces and Static Variables Nonmember, Static Member, an…

一.概要部分 1.代码能符合需求和规格说明么? 经过我自己的测试和助教的检测,他的代码符合需求和规格的说明. 2.代码设计是否有周全的考虑? 这里代码设计我们是从两个方面检查的: 对方处理控制台输入的逻辑是不是考虑全面: 经过我的分析和他的解释,我可以得到他的处理控制台输入的逻辑是这样的: 画了逻辑图就可以看出处理输入的这部分大致判断逻辑已经很完备了,还可以再更完备: 输入的数字的范围处理:对于输入的生成数独的数量,规定是N范围在1到100万之间,但是上面的逻辑并没有对输入的数字字符串做这方面的…

sys_arch interface for lwIP 2.0.3 Author: Adam Dunkels Simon Goldschmidt The operating system emulation layer provides a common interfacebetween the lwIP code and the underlying operating system kernel. Thegeneral idea is that porting lwIP to new arc…

Introduction Those who know don't talk. Those who talk don't know. Sometimes, PHP "as is" simply isn't enough. Although these cases are rare for the average user, professional applications will soon lead PHP to the edge of its capabilities, in t…

A. Watching a movie time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output You have decided to watch the best moments of some movie. There are two buttons on your player: Watch the current minute…

LINK time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output The teacher gave Anton a large geometry homework, but he didn't do it (as usual) as he participated in a regular round on Codeforces. In…