原题链接:http://acm.csu.edu.cn/OnlineJudge/problem.php?id=1416 结论题,具体判断方法请点击这个网址. 筛素数是肯定的,但一开始定的范围太大了,想当然要筛到10^9的质数,但仔细想想,只要到sqrt(10^9)就可以了,最后的那一个质数是最后一步的比较,不用筛出来. #include <stdio.h> #include <string.h> #include <iostream> using namespace st…

Erlang(英语发音:/ˈɜrlæŋ/)是一种通用的并行程序设计语言,它由乔·阿姆斯特朗(Joe Armstrong)在瑞典电信设备制造商爱立信所辖的计算机科学研究室开发,目的是创造一种可以应付大规模开发活动的程序设计语言和运行环境.Erlang于1987年发布正式版本,最早是爱立信拥有的私有软件,经过十年的发展,于1998年发表开放源代码版本. Erlang是运作于虚拟机的解释型语言,但是现在也包含有乌普萨拉大学高性能Erlang计划(HiPE)[2]开发的原生代码编译器,自R11B-4版本…

http://acm.csu.edu.cn/OnlineJudge/problem.php?id=1392 1392: Number Trick Time Limit: 1 Sec  Memory Limit: 128 MBSubmit: 200  Solved: 36[Submit][Status][Web Board] Description Input Output Sample Input 2.6 Sample Output 135 270 135135 270270 HINT 分析:…

POJ 1416 Shredding Company Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 5231   Accepted: 2964 Description You have just been put in charge of developing a new shredder for the Shredding Company Although a "normal" shredder would…

Practical Machine Learning For The Uninitiated Last fall when I took on ShippingEasy's machine learning problem, I had no practical experience in the field. Getting such a task put on my plate was somewhat terrifying, and even more so as we started t…

题目链接:http://acm.timus.ru/problem.aspx?space=1&num=1416 Zaphod Beeblebrox — President of the Imperial Galactic Government. And by chance he is an owner of enterprises that trade in secondhand pens. This is a complicated highly protable and highly comp…

http://acm.csu.edu.cn/OnlineJudge/problem.php?id=1305 1305: Substring Time Limit: 2 Sec  Memory Limit: 10 MB Submit: 12  Solved: 2 [Submit][Status][Web Board] Description Given a string s. The length of s is smaller than 1000. You are to caculate the…

题目链接:http://acm.csu.edu.cn/OnlineJudge/problem.php?id=1616 1616: Heaps Time Limit: 2 Sec  Memory Limit: 128 MBSubmit: 48  Solved: 9[Submit][Status][Web Board] Description Zuosige always has bad luck. Recently, he is in hospital because of pneumonia.…

想学习一下SVM,所以找到了LIBSVM--A Library for Support Vector Machines,首先阅读了一下网站提供的A practical guide to SVM classification. 写一写个人认为主要的精华的东西. SVMs is:a technique for data classification Goal is:to produce a model (based on training data) which predicts the targe…

1.now we looke at this book . I decide  to make a brief review the book covers as follows (I straight-forward copy here):Chapter 1, Building a Vulnerable Web Application Lab, will help us to get andinstall the vulnerable application Mutillidae using…