S-Nim Time Limit: 5000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 5637    Accepted Submission(s): 2414 Problem Description Arthur and his sister Caroll have been playing a game called Nim for some time now.…

S-Nim Time Limit: 5000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 3077    Accepted Submission(s): 1361 Problem Description Arthur and his sister Caroll have been playing a game called Nim for some time now…

Fibonacci again and again Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 6363    Accepted Submission(s): 2646 Problem Description 任何一个大学生对菲波那契数列(Fibonacci numbers)应该都不会陌生,它是这样定义的:F(1)=1;F(2)=2;…

S-Nim Time Limit: 5000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 7262    Accepted Submission(s): 3074 Problem Description Arthur and his sister Caroll have been playing a game called Nim for some time now.…

S-Nim HDU 1536 博弈 sg函数 题意 首先输入K,表示一个集合的大小,之后输入集合,表示对于这对石子只能去这个集合中的元素的个数,之后输入 一个m表示接下来对于这个集合要进行m次询问,之后m行,每行输入一个n表示有n个堆,每堆有n1个石子,问这一行所表示的状态是赢还是输,如果赢输入W否则L. 解题思路 如果没有每次取石子个数的限制的话,那么仅仅需要把每堆石子的个数进行异或运算即可,如果结果不是1,那么先手赢,反之后手赢. 但是这里对每次取石子的个数进行了限制,每次只能从几个数中进行…

Chess Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 1821    Accepted Submission(s): 799 Problem Description Alice and Bob are playing a special chess game on an n × 20 chessboard. There are se…

HDU.5692 Snacks ( DFS序 线段树维护最大值 ) 题意分析 给出一颗树,节点标号为0-n,每个节点有一定权值,并且规定0号为根节点.有两种操作:操作一为询问,给出一个节点x,求从0号节点开始到x节点,所能经过的路径的权值最大为多少:操作二为修改,给出一个节点x和值val,将x的权值改为val. 可以看出是树上修改问题.考虑的解题方式有DFS序+线段树,树链剖分,CXTree.由于后两种目前还不会,选择用DFS序来解决. 首先对树求DFS序,在求解过程当中,顺便求解树上前缀和(p…

题目链接:http://acm.hdu.edu.cn/showproblem.php? pid=1944 pid=1536"> http://acm.hdu.edu.cn/showproblem.php?pid=1536 给定每一次能够取的石头数,给定非常多种情况,每一种情况有若干堆石头,推断先手胜负. SG函数打表,然后直接抑或.推断结果是否为0.第一次写SG函数,贴个代码,慢慢理解. 代码: /* ********************************************…

S-Nim Problem Description   Arthur and his sister Caroll have been playing a game called Nim for some time now. Nim is played as follows: The starting position has a number of heaps, all containing some, not necessarily equal, number of beads. The pl…

转载自:http://blog.csdn.net/sr_19930829/article/details/23446173 解题思路: 这个题折腾了两三天,参考了两个模板,在这之间折腾过来折腾过去,终于把用法和需要注意的地方弄清楚了,汗.注意的是: bool类型的数组比int类型的数组快,不超时与超时的区别,在sg组合博弈时,只能在(a1,a2,a3,a4)中取,要特别注意这里面的数字是否是有序的,这个特别重要,下面贴出的两个模板对应了两种情况.最后,大数据输入还得用scanf.. 模板1(该模…