Memory

It is a well-known fact that behind every good comet is a UFO. These UFOs often come to collect loyal supporters from here on Earth. Unfortunately, they only have room to pick up one group of follow

Submintting Solutions 是一篇TEXT,主要是教你如何在在USACO正确答题，主要描述的是USACO的一些编译环境，一些答题文件规范，和一些网站规则。    Program submissions require simple Header comments: your ID (i.e., your USACO login name), the name of the

USACO全称 USA Computing Olympid,是美国高校的信息学测评网站，也是美国中学生的的官方竞赛网站。     之前在某个大牛的博客里偶然看到这个网站，就稍微搜索了一下，USACO的官方网站是http://www.usaco.org/。目前自己已经在这个网站上体验一周了，感觉这个网站非常有趣。    不同于国内的ACM-OJ,USACO提供一个边答题，边学习的过程

这篇TEXT主要讲述的是在编程比赛中常见的题目类型，   Hal Burch conducted an analysis over spring break of 1999 and made an amazing discovery: there are only 16 types of programming contest problems! Furthermore, the top

`Ad hoc' problems are those whose algorithms do not fall into standard categories with well-studied solutions. Each ad hoc problem is different; no specific or general techniques exist to solve them.

A group of NP (2 ≤ NP ≤ 10) uniquely named friends has decided to exchange gifts of money. Each of these friends might or might not give some money to any or all of the other friends. Likewise, each f