所谓概率dp,用动态规划的思想找到一个事件中可能发生的所有情况,然后找到符合要求的那些情况数,除以总数便可以得到符合要求的事件发生的概率.其核心思想还是通过dp来得到事件发生的所有情况,很类似在背包专题中我们提及的组合记数问题. 我们通过具体的实例来体会概率dp这类问题.(Problem source : Light OJ 1064) Description n common cubic dice are thrown. What is the probability that the sum
摘自: http://www.ntu.edu.sg/home/ehchua/programming/java/J4a_GUI.html Creating Your Own Event, Source and Listener: Suppose that we have a source called Light, with two states - on and off. The source is capable of notifying its registered listener(s),
A list of open source C++ libraries < cpp | links http://en.cppreference.com/w/cpp/links/libs The objective of this page is to build a comprehensive list of open source C++ libraries, so that when one needs an implementation of particular functional
1.CentOS - Installing Nginx from source http://articles.slicehost.com/2009/2/2/centos-installing-nginx-from-source Versions At the time of writing, the latest stable version of Nginx is 0.6.34. You can check the latest versions and change logs at the
Specular lighting is most commonly used to give light reflection off of metallic surfaces such as mirrors and highly polished/reflective metal surfaces. It is also used on other materials such as reflecting sunlight off of water. Used well it can add
The Ghost Blows Light Problem Description My name is Hu Bayi, robing an ancient tomb in Tibet. The tomb consists of N rooms (numbered from 1 to N) which are connected by some roads (pass each road should cost some time). There is exactly one route be
Let the light guide us Time Limit: 5000/2000 MS (Java/Others) Memory Limit: 62768/32768 K (Java/Others) Total Submission(s): 677 Accepted Submission(s): 226 Problem Description Plain of despair was once an ancient battlefield where those brave
Dying Light Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 513 Accepted Submission(s): 122 Problem Description LsF is visiting a local amusement park with his friends, and a mirror room su