Special equations Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 178    Accepted Submission(s): 87 Special Judge Problem Description Let f(x) = a nx n +...+ a 1x +a 0, in which a i (0 <= i <=…

题意:求一个无向图的,去掉两个不同的点后最多有几个连通分量. 思路:枚举每个点,假设去掉该点,然后对图求割点后连通分量数,更新最大的即可.算法相对简单,但是注意几个细节: 1:原图可能不连通. 2:有的连通分量只有一个点,当舍去该点时候,连通分量-1: 复习求割点的好题! #include<iostream> #include<cstdio> #include<vector> using namespace std; int n,m; vector<vector&…

部分转自http://blog.csdn.net/crazy______/article/details/9021169 #include<cstdio> using namespace std; __int64 A[3][3],s[3][3],tmp[3][3]; void fun(__int64 n,__int64 m) { __int64 i,j,k; for(i=1;i<=2;i++) for(j=1;j<=2;j++) { s[i][j]=A[i][j]; } --n;…

Hypersphere Time Limit: 1 Second       Memory Limit: 32768 KB In the world of k-dimension, there's a large hypersphere made by mysterious metal. People in the world of k-dimension are performing a ceremony to worship the goddess of dimension. They ar…

HDU 4041 Eliminate Witches! (模拟题 ACM ICPC 2011 亚洲北京赛区网络赛题目) Eliminate Witches! Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 863    Accepted Submission(s): 342 Problem Description Kaname Mado…

HDU 5073 Galaxy (2014 Anshan D简单数学) 题目链接http://acm.hdu.edu.cn/showproblem.php?pid=5073 Description Good news for us: to release the financial pressure, the government started selling galaxies and we can buy them from now on! The first one who bought…

题目链接 F(N) Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 4579 Accepted Submission(s): 1610 Problem Description Giving the N, can you tell me the answer of F(N)? Input Each test case contains a si…

Building bridges Time Limit: 3000/1000 MS (Java/Others)    Memory Limit: 65535/32768 K (Java/Others)Total Submission(s): 45    Accepted Submission(s): 39 Problem Description Hululu and Cululu are two pacific ocean countries made up of many islands. T…

C - Rightmost Digit Time Limit:1000MS Memory Limit:32768KB 64bit IO Format:%I64d & %I64u Submit Status Practice HDU 1061 Description Given a positive integer N, you should output the most right digit of N^N. Input The input contains several test case…

这道题是这种,给主人公一堆事件的成功概率,他仅仅想恰好成功一件. 于是,问题来了,他要选择哪些事件去做,才干使他的想法实现的概率最大. 我的第一个想法是枚举,枚举的话我想到用dfs,但是认为太麻烦. 于是想是不是有什么规律,于是推导了一下,推了一个出来,写成代码提交之后发现是错的. 最后就没办法了,剩下的时间不够写dfs,于是就放弃了. 今天看thnkndblv的代码,代码非常短,于是就想肯定是有什么数学规律,于是看了一下, 果然如此. 是这种,还是枚举,当然是有技巧的,看我娓娓道来. 枚举的话…