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RSS订阅原创 第二层第五题：双基回文数
Dual Palindromes Mario Cruz (Colombia) & Hugo Rickeboer (Argentina) A number that reads the same from right to left as when read from left toright is called a palindrome. The number 12321 is a pali
2015-10-05 22:02:33
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原创 第二层第四题：回文平方数
Palindromic Squares Rob Kolstad Palindromes are numbers that read the same forwards as backwards. Thenumber 12321 is a typical palindrome. Given a number base B (2 <= B <= 20 base 10), print all
2015-10-05 21:30:04
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原创 第二层第三题：名字和数字
Name That Number Among the large Wisconsin cattle ranchers, it is customary to brand cowswith serial numbers to please the Accounting Department. The cow hands don'tappreciate the advantage of this f
2015-10-05 21:07:39
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原创 第二层第二题：矩阵变换
Transformations A square pattern of size N x N (1 <= N <= 10) black and white squaretiles is transformed into another square pattern. Write a program that willrecognize the minimum transformation tha
2015-10-05 20:42:32
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原创 第二层第一题：挤牛奶
尼玛。。。有暴 力两个字不让发。。。暴 力算法就怎么不行了？瞧不起人家？= =！ Milking Cows Three farmers rise at 5 am each morning and head for the barn to milkthree cows. The first farmer begins milking his cow at time 300 (measured
2015-10-05 10:05:45
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原创 第二层内容：枚举
昨天发疯了一天，博客一直没补上，这两天赶快写几篇补上吧。表示要写出让自己看着舒服的博客也挺累。。。 Complete Search The Idea Solving a problem using complete search is based on the ``Keep It Simple,Stupid'' princip
2015-10-03 22:04:08
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原创 第一层第四题：打断项链
Broken Necklace You have a necklace of N red, white, or blue beads (3<=N<=350) someof which are red, others blue, and others white, arranged at random. Here aretwo examples for n=29:
2015-10-03 21:45:48
817
原创 第一层第三题：黑色星期五
Friday the Thirteenth Is Friday the 13th really an unusual event? That is, does the 13th of the month land on a Friday less often than onany other day of the week? To answer this question, write a
2015-10-01 21:50:25
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原创 第一层第二题：贪婪的礼物赠送者
Greedy Gift Givers A group of NP (2 ≤ NP ≤ 10) uniquely named friends has decided to exchangegifts of money. Each of these friends might or might not give some money to anyor all of the other friends
2015-10-01 21:27:57
842
原创 第一层内容：杂题
接上一篇博客，这篇课文其实没讲什么内容（杂题要是能讲出固定的算法我也就服了。。。），诸位有兴趣的就看看吧，聊以自慰。 Ad Hoc Problems `Ad hoc' problems are those whose algorithms do not fall into standardcategories with well-studied
2015-09-29 20:18:42
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原创 第一篇正式的课文：竞赛题目的类型
今天早上八点台风刚好登录。。。作为苦逼的湖建人民果断停课了。。。在家里蹲了一天，晚上看看雨没多大，于是决定溜到学校电脑室，继续刷USACO以示沉痛哀悼。 Programming Contest Problem Types Hal Burch conducted an analysis over spring break of 1999 and made ana
2015-09-29 20:00:48
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原创 第一层第一题：你要的飞碟在这里
Your Ride Is Here It is a well-known fact that behind every good comet is a UFO. These UFOsoften come to collect loyal supporters from here on Earth. Unfortunately, theyonly have room to pick up one
2015-09-27 11:20:23
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