摘要： 1.多米诺骨牌(domino.pas)Jzabc对多米诺骨牌有很大的兴趣，然而他的骨牌比较特别，只有黑色的和白色的两种。他觉得如果存在连续三个骨牌是同一种颜色，那么这个骨牌排列便不是美观的。现在他有n个骨牌要来排列，他想知道不美观的排列个数。由于数字较大，数学不好的他又不会统计，所以他请你来帮忙。希... 阅读全文

摘要： StringsobitsKim SchrijversConsider an ordered set S of strings of N (1 #include#include#includeusing namespace std;int n,m;long long k;int dp[32][32];... 阅读全文

摘要： ContactIOI'98The cows have developed a new interest in scanning the universe outside their farm with radiotelescopes. Recently, they noticed a very cu... 阅读全文

摘要： codevs 3115，3116,3117。主要是对于高精度的练习，还不会的同学可以学习下。//加法#include#includestruct hp{ int w[260];};hp jia(hp a,hp b){ hp c; c.w[0]=a.w[0]>b.w[0]?a.w[0]+1:b.... 阅读全文

摘要： Party LampsIOI 98To brighten up the gala dinner of the IOI'98 we have a set ofN(10 =0), i.e., 1,4,7,...A counter C records the total number of button ... 阅读全文

摘要： Longest PrefixIOI'96The structure of some biological objects is represented by the sequence of their constituents, where each part is denoted by an up... 阅读全文

摘要： Money SystemsThe cows have not only created their own government but they have chosen to create their own money system. In their own rebellious way, t... 阅读全文

摘要： Controlling CompaniesSome companies are partial owners of other companies because they have acquired part of their total shares of stock. For example,... 阅读全文

摘要： Agri-NetRuss CoxFarmer John has been elected mayor of his town! One of his campaign promises was to bring internet connectivity to all farms in the ar... 阅读全文

摘要： Bessie Come HomeKolstad & BurchIt's dinner time, and the cows are out in their separate pastures. Farmer John rings the bell so they will start walkin... 阅读全文