还是见的题太少了 「NowCoder Contest 295」H. Playing games 题意:选出尽量多的数使得异或和为$ 0$ $ Solution:$ 问题等价于选出尽量少的数使得异或和为全集 根据线性基思想可以推得整个集合的异或集合可以被不超过$ bitcount$个数的异或集合表示 因此答案也不超过$ bitcount$ 对于原集合我们做若干次$ FWT$ 每次把当前异或集合卷上初始集合 复杂度$ O(n \ log^2 \ n)$ 足以通过本题 但是还不够 我们发现我们只是想知…

原文链接https://www.cnblogs.com/zhouzhendong/p/NowCoder-2018-Summer-Round8-H.html 题目传送门 - https://www.nowcoder.com/acm/contest/146/H 题意 有 $n$ 堆石子,第 $i$ 堆有 $a_i$ 个.请你取出尽量多堆石子,使得取石子nim游戏后手必胜.输出你选择的石子堆数. $n,a_i\leq 5\times 10^5$ 题解 首先我们把题转化成:在 $n$ 个数中选择尽量多的…

fwt #include<bits/stdc++.h> using namespace std; const int N=1<<19; const int mod=1000000007; const int inv2=(mod+1)/2; void fwt(int *a,int n) { for(int i=1;i<n;i<<=1) for(int p=i<<1,j=0;j<n;j+=p) for(int k=j;k<j+i;k++) {…

题目链接 题意 : 给出 N 个数.然后问你最多取出多少石子使得在 NIM 博弈中.后手必胜 分析 :  Nim 博弈模型,后手必胜当且仅当各个堆的石子的数目的异或和为 0 转化一下.变成最少取多少石子使得异或和为原来所有石子堆的异或和 和背包DP思想很类似.可以考虑 DP dp[i][j] = 到第 i 个石子为止.使得异或和为 j 的最少取石子方案是多少 但是如果这样子去构造 dp 转移显然是 O(n^2) 的 如果你接触过 FWT 优化 DP 的题目的话.可能会想到如下的 DP 方程 dp…

Single-Player Games Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 1287   Accepted: 362 Description Playing games is the most fun if other people take part. But other players are not always available if you need them, which led to the i…

Byte Tank Posts Archive Deep Reinforcement Learning: Playing a Racing Game OCT 6TH, 2016 Agent playing Out Run, session 201609171218_175epsNo time limit, no traffic, 2X time lapse Above is the built deep Q-network (DQN) agent playing Out Run, trained…

Description  Games Are Important  One of the primary hobbies (and research topics!) among Computing Science students at the University of Alberta is, of course, the playing of games. People here like playing games very much, but the problem is that t…

Alice and Bob Time Limit: 1000ms   Memory limit: 65536K 题目描述 Alice and Bob like playing games very much.Today, they introduce a new game. There is a polynomial like this: (a0*x^(2^0)+1) * (a1 * x^(2^1)+1)*.......*(an-1 * x^(2^(n-1))+1). Then Alice as…

Arcane Numbers 1 Time Limit:1000MS     Memory Limit:32768KB     64bit IO Format:%I64d & %I64u Submit Status Practice HDU 4320 Description Vance and Shackler like playing games. One day, they are playing a game called "arcane numbers". The ga…

https://sourceforge.net/projects/sentrytools/ [root@localhost ~]# tar -xzvf portsentry-1.2.tar.gz [root@localhost ~]# cd portsentry_beta/ [root@localhost portsentry_beta]# ls CHANGES portsentry.c portsentry_io.c README.COMPAT CREDITS portsentry.conf…

http://acm.sdut.edu.cn/sdutoj/problem.php?action=showproblem&problemid=2608 Alice and Bob Time Limit: 1000ms   Memory limit: 65536K  有疑问?点这里^_^ 题目描述 Alice and Bob like playing games very much.Today, they introduce a new game. There is a polynomial li…

传送门 Time Limit: 3 Sec  Memory Limit: 128 MB Description Alice likes playing games. So she will take part in the movements of M within N days, and each game is represented in an integer between 1 and M. Roommates have Q magic questions: How many diffe…

Alice and Bob Time Limit: 1000ms   Memory limit: 65536K  有疑问?点这里^_^ 题目描述 Alice and Bob like playing games very much.Today, they introduce a new game. There is a polynomial like this: (a0*x^(2^0)+1) * (a1 * x^(2^1)+1)*.......*(an-1 * x^(2^(n-1))+1). T…

Arcane Numbers 1 Time Limit:1000MS     Memory Limit:32768KB     64bit IO Format:%I64d & %I64u Submit Status Practice HDU 4320 Description Vance and Shackler like playing games. One day, they are playing a game called "arcane numbers". The ga…

the pilot: 美国电视剧新剧开播都会有一个试播来测试观众对新剧的接受程度,以此来决定是否再继续播下去,也可以说是一个开端,第一集,试播 -Tattoo Artist: That's it. tatoo: 纹身  artist: 艺术家 完成了. Can I just, you know, look at it for a minute? minute: 分钟 能让我欣赏下吗? You're an artist, Sid. artist: 艺术家 你真是个艺术家,Sid. You're t…

Ikki's Story IV - Panda's Trick Time Limit: 1000MS   Memory Limit: 131072K Total Submissions: 7296   Accepted: 2705 Description liympanda, one of Ikki’s friend, likes playing games with Ikki. Today after minesweeping with Ikki and winning so many tim…

题目地址: http://acm.nyist.net/JudgeOnline/problem.php?pid=204    描述As is known to all,if you throw a coin up and let it droped on the desk there are usually three results. Yes,just believe what I say ~it can be the right side or the other side or standi…

GTW likes gt 题目连接: http://acm.hdu.edu.cn/showproblem.php?pid=5596 Description Long long ago, there were n adorkable GT. Divided into two groups, they were playing games together, forming a column. The i−th GT would randomly get a value of ability bi.…

题目链接: B. Nanami's Digital Board time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Nanami is an expert at playing games. This day, Nanami's good friend Hajime invited her to watch a game of ba…

http://poj.org/problem?id=3207 Ikki's Story IV - Panda's Trick Time Limit: 1000MS   Memory Limit: 131072K Total Submissions: 7021   Accepted: 2604 Description liympanda, one of Ikki’s friend, likes playing games with Ikki. Today after minesweeping wi…

Data Types in the Kernel Use of Standard C Types /* * datasize.c -- print the size of common data items * This runs with any Linux kernel (not any Unix, because of <linux/types.h>) * * Copyright (C) 2001 Alessandro Rubini and Jonathan Corbet * Copyr…

题目:http://acm.hdu.edu.cn/showproblem.php?pid=5036 Explosion Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 262144/262144 K (Java/Others)Total Submission(s): 879    Accepted Submission(s): 309 Problem Description Everyone knows Matt enjoys pl…

题目描述 Alice and Bob like playing games very much.Today, they introduce a new game. There is a polynomial like this: (a0*x^(2^0)+1) * (a1 * x^(2^1)+1)*.......*(an-1 * x^(2^(n-1))+1). Then Alice ask Bob Q questions. In the expansion of the Polynomial, G…

小技巧:本文之前由csdn自动生成了一个目录,不必下拉一个一个去找,可通过目录标题直接定位. 本文转载自本人的csdn博客,复制过来的,排版就不弄了,欢迎转载. 声明: 题目部分皆为南阳OJ题目. 代码部分包含AC代码(可能不止一个)和最优代码,大部分都是本人写的,并且大部分为c代码和少部分c++代码and极少java代码,但基本都是c语言知识点,没有太多差别,可能代码有的写的比较丑,毕竟知识有限. 语言入门部分题基本都较为简单,是学习编程入门的很好练习,也是ACM的第一步,入门的最佳方法,望认…

Problem Description Everyone knows Matt enjoys playing games very much. Now, he to N. Input The first line of the input contains an integer T, denoting the number of testcases. Then T test cases follow. In the first line of each test ) indicating the…

看英文题真是麻烦...理解题意花的时间比想的时间还长...裸的网络流, 我们只要限制每个人出发流量为1, 每个大学进入的流量至多为2即可, 相当于构造可行解. ---------------------------------------------------------------------------------- #include<cstdio> #include<cstring> #include<algorithm> #include<cctype&…

[A]极角排序+树状数组 [B]计算几何,凸包(队友已出) [C]-_-///不懂 [D]数论,概率密度 [E]图的连通性+Floyed传递闭包+bitset [F]贪心 [G]签到题 [H]区间维护+线段树+DFS序(可以看看) [I]BFS地图题(当时好多人坑在摄像头上面了,现在有一点点思路,分层图,一会看看) [J]-_-///// 貌似除了这两题巨坑的,剩下的都有能出的可能性 [A] Always Cook Mushroom Time Limit: 10000/5000 MS (Java…

2102: [Usaco2010 Dec]The Trough Game Time Limit: 10 Sec  Memory Limit: 64 MBSubmit: 117  Solved: 84[Submit][Status] Description Farmer John and Bessie are playing games again. This one has to do with troughs of water. Farmer John has hidden N (1 <= N…

POJ 3207 Ikki's Story IV - Panda's Trick liympanda, one of Ikki's friend, likes playing games with Ikki. Today after minesweeping with Ikki and winning so many times, he is tired of such easy games and wants to play another game with Ikki. liympanda…

TED01 - How To Get Better At The Things You Care About 昨天我发布了攻克英语口语的宣言,今天就行动.TED是我们学习口语的好地方,本着学以致用的原则,作为一名教师,我优先选择的内容都是和学习和教学相关的,第一篇是How To Get Better At The Things You Care About 听说过「刻意练习」的人都知道三个概念:舒适区.学习区.恐慌区.How To Get Better At The Things You Car…