They can usually be purchased in three sizes: £ 
5, £ 1 and a half pound bags. I even saw them to buy on eBay. Many companies are 
cutting Tekpak bag of...
                            
                            
                                分类:
其他好文   时间:
2014-06-16 09:23:39   
                                阅读次数:
443
                             
                    
                        
                            
                            
                                题目就是给出一组数,让我们测试其中有多少个是素数。
求素数有测试sqrt(n)个数的方法,有筛子方法,不过对于本题这样的题目来说就都不是高效的。
本题使用Miller Rabin素数测试法,效率奇高,对于不是极其大的整数测试都几乎是常数时间。令人神往的算法啊。
网上有个程序,好像是什么吉林的模板程序,不过我一直没看懂他是什么思路写的,是个AC的程序,不过却是错误的,呵呵,因为程序一直把9当做...
                            
                            
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其他好文   时间:
2014-06-15 18:48:07   
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194
                             
                    
                        
                            
                            
                                题目大意:
问A-B 走K 部的方法数。
如果矩阵 a 为任意一个点到另外一个点 走 1 步的方法数
那么 a*a 就是任意一个点到另外一个点 走 2 步的方法数
。。。
那么直接快速幂。
#include 
#include 
#include 
#include 
#include 
#define N 10
using namespace std;
in...
                            
                            
                                分类:
其他好文   时间:
2014-06-15 18:02:55   
                                阅读次数:
212
                             
                    
                        
                            
                            
                                The Basics
Swift is a new programming language for iOS and OS X app development. Nonetheless, many parts of Swift will be familiar from your experience of developing in C and Objective-C.
Swift是用于开发...
                            
                            
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其他好文   时间:
2014-06-15 08:47:25   
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229
                             
                    
                        
                            
                            
                                坦克大战时间限制:1000ms | 内存限制:65535KB难度:3描述Many of us 
had played the game "Battle city" in our childhood, and some people (like me) 
even often play it on com...
                            
                            
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其他好文   时间:
2014-06-13 08:24:42   
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221
                             
                    
                        
                            
                            
                                Leather Mulberry spent so many years. Many 
Mulberry handbags factory in southwest England. All bags are made from the 
original pattern. They are not o...
                            
                            
                                分类:
其他好文   时间:
2014-06-12 21:28:07   
                                阅读次数:
328
                             
                    
                        
                            
                            
                                There are many types of eating disorders. We 
are most familiar with the three major disorders Anorexia Nervosa, Bulimia 
Nervosa and Binge Eating Disor...
                            
                            
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其他好文   时间:
2014-06-12 21:17:19   
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414
                             
                    
                        
                            
                            
                                题目
Follow up for "Unique Paths":
Now consider if some obstacles are added to the grids. How many unique paths would there be?
An obstacle and empty space is marked as 1 and 0 respective...
                            
                            
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其他好文   时间:
2014-06-10 18:28:49   
                                阅读次数:
207
                             
                    
                        
                            
                            
                                问题:
You are climbing a stair case. It takes n steps to reach to the top.
Each time you can either climb 1 or 2 steps. In how many distinct ways can you climb to the top?
分析:
该问题是符合斐波那契数列的,具体...
                            
                            
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其他好文   时间:
2014-06-10 08:19:31   
                                阅读次数:
194
                             
                    
                        
                            
                            
                                How many ways
Time Limit: 3000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)
Total Submission(s): 2594    Accepted Submission(s): 1528
Problem Description
这是一个简单的生存游戏,你控...
                            
                            
                                分类:
其他好文   时间:
2014-06-10 07:05:49   
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188