知识讲解
http://blog.csdn.net/justlovetao/article/details/6673602
经典例题
题目:http://poj.org/problem?id=1236
解题报告:http://blog.csdn.net/wangjian8006/article/details/7888558
http://blog.csdn.net/justlovetao/article/details/6673602
题目:http://poj.org/problem?id=1236
解题报告:http://blog.csdn.net/wangjian8006/article/details/7888558