题目链接:http://poj.org/problem?id=1860 Description Several currency exchange points are working in our city. Let us suppose that each point specializes in two particular currencies and performs exchange operations only with these currencies. There can b…

上一篇,讲了RabbitMQ的具体用法,可以看看这篇文章:RabbitMQ学习系列(三): C# 如何使用 RabbitMQ.今天说些理论的东西,Exchange 的几种模式. AMQP协议中的核心思想就是生产者和消费者隔离,生产者从不直接将消息发送给队列.生产者通常不知道是否一个消息会被发送到队列中,只是将消息发送到一个交换机.先由Exchange来接收,然后Exchange按照特定的策略转发到Queue进行存储.同理,消费者也是如此.Exchange 就类似于一个交换机,转发各个消息分发到相…

RabbitMQ交换器Exchange介绍与实践 RabbitMQ系列文章 RabbitMQ在Ubuntu上的环境搭建 深入了解RabbitMQ工作原理及简单使用 RabbitMQ交换器Exchange介绍与实践 RabbitMQ事务和Confirm发送方消息确认--深入解读 使用Docker部署RabbitMQ集群 你不知道的RabbitMQ集群架构全解 导读 有了Rabbit的基础知识之后(基础知识详见:深入解读RabbitMQ工作原理及简单使用),本章我们重点学习一下Rabbit里面的ex…

Currency Exchange Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 22648   Accepted: 8180 Description Several currency exchange points are working in our city. Let us suppose that each point specializes in two particular currencies and pe…

题目链接:http://poj.org/problem?id=3159 Description During the kindergarten days, flymouse was the monitor of his class. Occasionally the head-teacher brought the kids of flymouse’s class a large bag of candies and had flymouse distribute them. All the k…

真是气skr人..没把d[]换成double...de了一上午的bug// 记得用G++提交啊 题目链接:http://poj.org/problem?id=1860 题意:告诉你n个点,m条路.起始点s,还有初始金额money.每条路表示从a->b的汇率和佣金以及b->a的汇率和佣金.你在该点所得是(本金-佣金)*汇率.问你这个人能不能赚钱. 题解:spfa套一下//.记得d[]换成double.具体的看看代码.QWQ. 代码: #include<iostream> #inclu…

1.前言 上个章节也有简单介绍过RabbitMQ交换器,这里主要了解下它的类型和如何使用.交换器有四种类型,分别是direct.fanout.topic.headers. 2.Virtual host(虚拟主机) 每一个RabbitMQ服务器都能创建虚拟的消息服务器,我们称之为虚拟主机(virtual host),简称为vhost.每一个vhost本质上是一个独立的小型RabbitMQ服务器,拥有自己独立的队列.交换器及绑定关系等(可避免队列和交换器等命名冲突),并且它拥有自己独立的权限.删除一…

题目链接:http://poj.org/problem?id=1502 Description BIT has recently taken delivery of their processor Apollo Odyssey distributed shared memory machine with a hierarchical communication subsystem. Valentine McKee's research advisor, Jack Swigert, has ask…

Description One cow ≤ N ≤ ) conveniently numbered ..N ≤ X ≤ N). A total of M ( ≤ M ≤ ,) unidirectional (one-way roads connects pairs of farms; road i requires Ti ( ≤ Ti ≤ ) units of time to traverse. Each cow must walk to the party and, when the part…

题目链接 : http://poj.org/problem?id=3020 Description The Global Aerial Research Centre has been allotted the task of building the fifth generation of mobile phone nets in Sweden. The most striking reason why they got the job, is their discovery of a new…