/// A heavily optimized sieve #include <cstdio> #include <cstring> #include <algorithm> #include <cmath> typedef unsigned int u32; typedef unsigned long long ull; const char pr60[]={2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59};…

My first idea was Sieve of Eratosthenes, too. But obviously my coding was not optimal and it exceeded 6s time limit. Then I googled it. Sounds like Miller-Rabin Testing is a much more serious solution. http://www.cnblogs.com/feature/articles/1824667.…

Prime Distance Time Limit: 2 Seconds      Memory Limit: 65536 KB The branch of mathematics called number theory is about properties of numbers. One of the areas that has captured the interest of number theoreticians for thousands of years is the ques…

The Go Programming Language Specification go语言规范 Version of May 9, 2018 Introduction 介绍 Notation 符号 Source code representation 源代码表示形式 Characters 字符 Letters and digits 字母和数字 Lexical elements 词法元素 Comments 评论 Tokens 令 牌 Semicolons 分号 Identifiers 标识符 K…

Frequently Asked Questions (FAQ) Origins 起源 What is the purpose of the project? What is the history of the project? What's the origin of the gopher mascot? Why did you create a new language? What are Go's ancestors? What are the guiding principles in…

简介           多核处理器越来越普及,那有没有一种简单的办法,能够让我们写的软件释放多核的威力?答案是:Yes.随着Golang, Erlang, Scale等为并发设计的程序语言的兴起,新的并发模式逐渐清晰.正如过程式编程和面向对象一样,一个好的编程模式需要有一个极其简洁的内核,还有在此之上丰富的外延,可以解决现实世界中各种各样的问题.本文以GO语言为例,解释其中内核.外延.   并发模式之内核           这种并发模式的内核只需要协程和通道就够了.其中协程负责执行代码,通道…

原文: http://qing.blog.sina.com.cn/2294942122/88ca09aa33002ele.html 简介           多核处理器越来越普及,那有没有一种简单的办法,能够让我们写的软件释放多核的威力?答案是:Yes.随着Golang, Erlang, Scale等为并发设计的程序语言的兴起,新的并发模式逐渐清晰.正如过程式编程和面向对象一样,一个好的编程模式需要有一个极其简洁的内核,还有在此之上丰富的外延,可以解决现实世界中各种各样的问题.本文以GO语言为例…

http://www.yankay.com/go-clear-concurreny/ Posted on 2012-11-28by yankay 多核处理器越来越普及.有没有一种简单的办法,能够让我们写的软件释放多核的威力?是有的.随着Golang, Erlang, Scala等为并发设计的程序语言的兴起,新的并发模式逐渐清晰.正如过程式编程和面向对象一样,一个好的编程模式有一个极其简洁的内核,还有在此之上丰富的外延.可以解决现实世界中各种各样的问题.本文以GO语言为例,解释其中内核.外延. 并…

go version go1.11 windows/amd64 本文为阅读Go语言中文官网的规则说明书(https://golang.google.cn/ref/spec)而做的笔记,介绍Go语言的 Go语句(Go statements). 0920-0918更新: goroutine 在很多地方被翻译为 协程,而不是本文中的 Go例程. Go语句 用于将一个 函数调用 作为一个 独立的并发线程(an independent concurrent thread of control) 或者 叫做…

题目链接 题目描述 Eddy has solved lots of problem involving calculating the number of coprime pairs within some range. This problem can be solved with inclusion-exclusion method. Eddy has implemented it lots of times. Someday, when he encounters another copr…