Xenia the beginner mathematician is a third year student at elementary school. She is now learning the addition operation.
The teacher has written down the sum of multiple numbers. Pupils should ca...
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其他好文 时间：
2014-07-22 23:05:53
阅读次数：
382
题目链接：1484 - Alice and Bob's Trip
题意：BOB和ALICE这对狗男女在一颗树上走，BOB先走，BOB要尽量使得总路径权和大，ALICE要小，但是有个条件，就是路径权值总和必须在[L,R]之间，求最终这条路径的权值。
思路：树形dp，dp[u]表示在u结点的权值，往下dfs的时候顺带记录下到根节点的权值总和，然后如果dp[v] + w + sum 在[l,r]内，...
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其他好文 时间：
2014-07-22 23:05:33
阅读次数：
486
So, the New Year holidays are over. Santa Claus and his colleagues can take a rest and have guests at last. When two "New Year and Christmas Men" meet, thear assistants cut out of cardboard the letter...
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其他好文 时间：
2014-07-22 23:03:53
阅读次数：
521
这道题在前两个的基础上做稍微改进就可以。下面是AC代码： 1 /** 2 * Design an
algorithm to find the maximum profit. You may complete at most two transactions.
3 * @pa...
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其他好文 时间：
2014-07-22 23:01:13
阅读次数：
251
You are given two linked lists representing two non-negative numbers. The digits are stored in reverse order and each of their nodes contain a single digit. Add the two numbers and return it as a link...
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其他好文 时间：
2014-05-01 22:08:19
阅读次数：
366
You are given two linked lists representing two
non-negative numbers. The digits are stored in reverse order and each of their
nodes contain a single ...
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其他好文 时间：
2014-05-01 20:18:54
阅读次数：
425
题目链接：
http://poj.org/problem?id=1707
Language:
Default
Sum of powers
Time Limit: 1000MS
Memory Limit: 10000K
Total Submissions: 735
Accepted: 354
D...
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其他好文 时间：
2014-05-01 18:36:32
阅读次数：
385
whether two nohead-linkedlist have the same end
个人信息：就读于燕大本科软件工程专业 目前大三;
本人博客：google搜索“cqs_2012”即可;
个人爱好：酷爱数据结构和算法，希望将来从事算法工作为人民作出自己的贡献;
博客内容：在无头节点的链表里删除元素;
博客时间：2014-4-15;
编程语言：C+...
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其他好文 时间：
2014-05-01 18:13:31
阅读次数：
352
Max Sum
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)
Total Submission(s): 135262 Accepted Submission(s): 31311
Problem Description
Given a sequen...
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其他好文 时间：
2014-04-30 22:21:40
阅读次数：
280
Background:
It's fairly common for businesses to want to provide some high availability for their SQL Server databases, and one option is to have two SQL Server databases on separate machines with a SQL Server database mirrored....
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数据库 时间：
2014-04-30 22:11:38
阅读次数：
520
