http://poj.org/problem?id=3710 叶子节点的 SG 值为0:中间节点的SG值为它的所有子节点的SG值加1后的异或和. 偶环可以视作一个点,奇环视为一条边(连了两个点). 这道题有两个需要注意的地方,这道题是多样例测试和这道题中两点之间形成的环要特判. #include<cstdio> #include<cstring> #include<algorithm> #include<cmath> #include<iostream…

题目描述 题解: 树上删边. 对于奇数长度的环,可以看做一条边. 对于偶数长度的环,可以看做什么都没有. 没有特别好的解释…… 代码: #include<cstdio> #include<cstring> #include<algorithm> using namespace std; ; template<typename T> inline void read(T&x) { T f = ,c = ;char ch = getchar(); ;ch…

基础博弈的小结:http://blog.csdn.net/acm_cxlove/article/details/7854530 经典翻硬币游戏小结:http://blog.csdn.net/acm_cxlove/article/details/7854534 经典的删边游戏小结:http://blog.csdn.net/acm_cxlove/article/details/7854532 五篇国家集训队论文: 张一飞: <由感性认识到理性认识——透析一类搏弈游戏的解答过程 > 王晓珂:<…

转载请注明出处,谢谢http://blog.csdn.net/ACM_cxlove?viewmode=contents    by---cxlove 首先当然要献上一些非常好的学习资料: 基础博弈的小结:http://blog.csdn.net/acm_cxlove/article/details/7854530 经典翻硬币游戏小结:http://blog.csdn.net/acm_cxlove/article/details/7854534 经典的删边游戏小结:http://blog.csdn…

[题目] Description Harry and Sally were playing games at Christmas Eve. They drew some Christmas trees on a paper: Then they took turns to cut a branch of a tree, and removed the part of the tree which had already not connected with the root. A step sh…

今天有同事问我下面这段代码是什么意思: var MyClass = function() { events.EventEmitter.call(this); // 这行是什么意思? }; util.inherits(MyClass, events.EventEmitter); // 还有这行? 我也不是很明白,于是研究了一下.下面是我的一些体会. Christmas Trees和Errors 如果你写过JavaScript或NodeJS代码,你也许会对callback地狱深有体会.每次当你进行异…

Father Christmas flymouse Time Limit: 1000MS   Memory Limit: 131072K Total Submissions: 3241   Accepted: 1099 Description After retirement as contestant from WHU ACM Team, flymouse volunteered to do the odds and ends such as cleaning out the computer…

Father Christmas flymouse Time Limit: 1000MS Memory Limit: 131072K Description After retirement as contestant from WHU ACM Team, flymouse volunteered to do the odds and ends such as cleaning out the computer lab for training as extension of his contr…

Big Christmas Tree Time Limit: 3000MS   Memory Limit: 131072K Total Submissions: 23387   Accepted: 5063 Description Christmas is coming to KCM city. Suby the loyal civilian in KCM city is preparing a big neat Christmas tree. The simple structure of t…

http://poj.org/problem?id=3013 Big Christmas Tree Time Limit: 3000MS   Memory Limit: 131072K Total Submissions: 19009   Accepted: 4048 Description Christmas is coming to KCM city. Suby the loyal civilian in KCM city is preparing a big neat Christmas…