How many ways??（HDU 2157）

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How many ways??（HDU 2157）

How many ways?? Sample Input 4 4 //n个点,m条路径0 1 //s->t可通0 21 32 32 //询问数0 3 2 //从0到3走两条路可到的方案有多少种0 3 33 60 11 00 22 01 22 121 2 10 1 30 0 Sample Output 2 0 1 3 矩阵快速幂,在离散数学课例听过类似的题目,n次幂就代表n条路方案. #include <cstring> #include <cstdio> #include…

2道acm编程题（2014）：1.编写一个浏览器输入输出（hdu acm1088）；2.encoding（hdu1020）

//1088(参考博客:http://blog.csdn.net/libin56842/article/details/8950688)//1.编写一个浏览器输入输出(hdu acm1088)://思路:对已经输入的字符串进行处理,遇到<br><hr>分别进行处理.遇到多于80个字符(统计该行的长度)或者<br>或者结束,则换行:遇到<hr>,输出80个'-'.#include<stdio.h>#include<string.h>#d…

2013 多校联合 F Magic Ball Game （hdu 4605）

http://acm.hdu.edu.cn/showproblem.php?pid=4605 Magic Ball Game Time Limit: 10000/5000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others) Total Submission(s): 309 Accepted Submission(s): 73 Problem Description When the magic ball game tu…

Bestcoder13 1003.Find Sequence（hdu 5064）解题报告

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=5064 题目意思:给出n个数:a1, a2, ..., an,然后需要从中找出一个最长的序列 b1, b2, ..., bt.需要满足两个条件(1)b1≤b2≤…≤bt (2)b2−b1≤b3−b2≤⋯≤bt−bt−1.求出最大的 t 为多少. 遗留大半年的题目呀呀呀呀~~~~!!!首先非常感谢乌冬子大半年前的指点迷津,呕心沥血想了大半天举出个反例,以便指出我算法的错误.为了纪念这个伟大的人物(…

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http://acm.hdu.edu.cn/showproblem.php?pid=2686 Problem Description Yifenfei very like play a number game in the n*n Matrix. A positive integer number is put in each area of the Matrix.Every time yifenfei should to do is that choose a detour which…

War Chess （hdu 3345）

http://acm.hdu.edu.cn/showproblem.php?pid=3345 Problem Description War chess is hh's favorite game:In this game, there is an N * M battle map, and every player has his own Moving Val (MV). In each round, every player can move in four directions as lo…