ACM算法 - 随笔分类(第4页) - jumpingfrog0

矩阵十题（3）

摘要：经典题目3 POJ3233 题目大意：给定矩阵A，求A + A^2 + A^3 + ... + A^k的结果（两个矩阵相加就是对应位置分别相加）。输出的数据mod m。k 2 #include 3 #define N 31 4 struct Matrix 5 { 6 int a[N][... 阅读全文

posted @ 2013-05-16 18:51 jumpingfrog0 阅读(2405) 评论(1) 推荐(0)

矩阵十题（2）

摘要：经典题目2 给定矩阵A，请快速计算出A^n（n个A相乘）的结果，输出的每个数都mod p。由于矩阵乘法具有结合律，因此A^4 = A * A * A * A = (A*A) * (A*A) = A^2 * A^2。我们可以得到这样的结论：当n为偶数时，A^n = A^(n/2) * A^(n... 阅读全文

posted @ 2013-05-16 11:36 jumpingfrog0 阅读(576) 评论(0) 推荐(0)

矩阵十题（1）

摘要：Matrix67大牛关于矩阵经典题目的链接：http://www.matrix67.com/blog/archives/276/nyoj 298 点的变换题目链接：http://acm.nyist.net/JudgeOnline/problem.php?pid=298经典题目1 给定n个点，m个操... 阅读全文

posted @ 2013-05-15 20:25 jumpingfrog0 阅读(820) 评论(0) 推荐(1)

矩阵快速幂

摘要：矩阵的快速幂是用来高效地计算矩阵的高次方的。将朴素的o（n）的时间复杂度，降到log（n）。这里先对原理（主要运用了矩阵乘法的结合律）做下简单形象的介绍：一般一个矩阵的n次方，我们会通过连乘n-1次来得到它的n次幂。但做下简单的改进就能减少连乘的次数，方法如下：把n个矩阵进行两两分组，比如：A*A*... 阅读全文

posted @ 2013-05-15 17:18 jumpingfrog0 阅读(754) 评论(0) 推荐(0)

AC自动机 HDU 2222 Keywords Search

摘要：Problem DescriptionIn the modern time, Search engine came into the life of everybody like Google, Baidu, etc.Wiskey also wants to bring this feature t... 阅读全文

posted @ 2012-10-27 15:56 jumpingfrog0 阅读(246) 评论(0) 推荐(0)

线段树单点更新 HDU 1394 Minimum Inversion Number

摘要：Problem DescriptionThe inversion number of a given number sequence a1, a2, ..., an is the number of pairs (ai, aj) that satisfy i aj.For a given sequ... 阅读全文

posted @ 2012-09-01 19:02 jumpingfrog0 阅读(389) 评论(0) 推荐(0)

扩展欧几里德 ZQUOJ 21001&&POJ 1061 青蛙的约会

摘要：Description两只青蛙在网上相识了，它们聊得很开心，于是觉得很有必要见一面。它们很高兴地发现它们住在同一条纬度线上，于是它们约定各自朝西跳，直到碰面为止。可是它们出发之前忘记了一件很重要的事情，既没有问清楚对方的特征，也没有约定见面的具体位置。不过青蛙们都是很乐观的，它们觉得只要一直朝着某个... 阅读全文

posted @ 2012-08-20 23:21 jumpingfrog0 阅读(1099) 评论(2) 推荐(0)

欧几里德与扩展欧几里德算法

摘要：欧几里德算法欧几里德算法又称辗转相除法，用于计算两个整数a,b的最大公约数。基本算法：设a=qb+r，其中a，b，q，r都是整数，则gcd(a,b)=gcd(b,r)，即gcd(a,b)=gcd(b,a%b)。第一种证明： a可以表示成a = kb + r，则r = a mod b 假设d是a... 阅读全文

posted @ 2012-08-19 00:47 jumpingfrog0 阅读(64199) 评论(9) 推荐(46)

差分约束系统 ZQUOJ 23147&&POJ 1201 Intervals

摘要：DescriptionYou are given n closed, integer intervals [ai, bi] and n integers c1, ..., cn.Write a program that:reads the number of intervals, their end... 阅读全文

posted @ 2012-08-17 18:11 jumpingfrog0 阅读(383) 评论(0) 推荐(0)

差分约束系统 ZQUOJ 21452&&POJ 1364 King

摘要：DescriptionOnce, in one kingdom, there was a queen and that queen was expecting a baby. The queen prayed: "If my child was a son and if only he was a ... 阅读全文

posted @ 2012-08-17 00:51 jumpingfrog0 阅读(266) 评论(0) 推荐(0)

k短路 POJ 2449 Remmarguts' Date

摘要：Description"Good man never makes girls wait or breaks an appointment!" said the mandarin duck father. Softly touching his little ducks' head, he told ... 阅读全文

posted @ 2012-08-16 17:10 jumpingfrog0 阅读(301) 评论(0) 推荐(0)

强连通分量 POJ 2375 Cow Ski Area

摘要：DescriptionFarmer John's cousin, Farmer Ron, who lives in the mountains of Colorado, has recently taught his cows to ski. Unfortunately, his cows are ... 阅读全文

posted @ 2012-08-14 14:36 jumpingfrog0 阅读(338) 评论(0) 推荐(0)

欧拉函数原根 POJ 1284 Primitive Roots

摘要：Primitive RootsDescriptionWe say that integer x, 0 2 int main() 3 { 4 int p,rea,i; 5 while(scanf("%d",&p)!=EOF) 6 { 7 p--; 8 ... 阅读全文

posted @ 2012-08-13 14:20 jumpingfrog0 阅读(325) 评论(0) 推荐(0)

欧拉函数 POJ 2407 Relatives&&POJ 2478 Farey Sequence

摘要：ZQUOJ 22354&&&POJ 2407 RelativesDescriptionGivenn, a positive integer, how many positive integers less thannare relatively prime ton? Two integersaand... 阅读全文

posted @ 2012-08-11 22:20 jumpingfrog0 阅读(372) 评论(0) 推荐(0)

强连通分量 ZQUOJ 10203&&POJ 1236 Network of Schools

摘要：DescriptionA number of schools are connected to a computer network. Agreements have been developed among those schools: each school maintains a list o... 阅读全文

posted @ 2012-08-10 21:41 jumpingfrog0 阅读(204) 评论(0) 推荐(0)

欧拉回路 ZQUOJ21349&&POJ2337 Catenyms

摘要：DescriptionA catenym is a pair of words separated by a period such that the last letter of the first word is the same as thefirst letter of the second... 阅读全文

posted @ 2012-08-09 15:32 jumpingfrog0 阅读(513) 评论(0) 推荐(1)

强连通分量 ZQUOJ 21467&&POJ 2553 The Bottom of a Graph

摘要：DescriptionWe will use the following (standard) definitions from graph theory. LetVbe a nonempty and finite set, its elements being called vertices (o... 阅读全文

posted @ 2012-08-07 16:25 jumpingfrog0 阅读(300) 评论(0) 推荐(0)

最大二分匹配 ZQUOJ21474 && POJ1486 Sorting Slides

摘要：DescriptionProfessor Clumsey is going to give an important talk this afternoon. Unfortunately, he is not a very tidy person and has put all his transp... 阅读全文

posted @ 2012-08-05 16:12 jumpingfrog0 阅读(212) 评论(0) 推荐(0)

dijkstra ZQUOJ 21463&&POJ 3463 Sightseeing

摘要：题目：Sightseeing来源：ZQUOJ 21463&&POJ 3463DescriptionTour operator Your Personal Holiday organises guided bus trips across the Benelux. Every day the bus ... 阅读全文

posted @ 2012-08-01 17:26 jumpingfrog0 阅读(215) 评论(0) 推荐(0)

最大二分匹配匈牙利算法模板&&POJ 1469 COURSES

摘要：题目：COURSES 来源：ZQUOJ 23124&&POJ 1469DescriptionConsider a group of N students and P courses. Each student visits zero, one or more than one courses. Yo... 阅读全文

posted @ 2012-07-28 04:08 jumpingfrog0 阅读(210) 评论(0) 推荐(0)

随笔分类 - ACM算法