You must have heard of the Knight's Tour problem. In that problem, a knight is placed on an empty chess board and you are to determine whether it can visit each square on the board exactly once. Let's consider a variation of the knight's tour problem…

A - Jessica's Reading Problem POJ - 3320 Jessica's a very lovely girl wooed by lots of boys. Recently she has a problem. The final exam is coming, yet she has spent little time on it. If she wants to pass it, she has to master all ideas included in a…

Jessica's Reading Problem Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 17562   Accepted: 6099 Description Jessica's a very lovely girl wooed by lots of boys. Recently she has a problem. The final exam is coming, yet she has spent litt…

Jessica's Reading Problem 题目大意:Jessica期末考试临时抱佛脚想读一本书把知识点掌握,但是知识点很多,而且很多都是重复的,她想读最少的连续的页数把知识点全部掌握(知识点都在书上,每一页都是一个知识点) 这一题可以用3061的游标卡尺法,我们可以先数数书上倒到底有多少个知识点,因为知识点都是序数,我们可以用二分法直接找到O(PlogP),这里可以采用set模板直接偷懒了,然后我们就可以用游标卡尺法了,因为所有知识点都要出现一次,所以我们统计新的知识点的出现就好了,最…

题目大意:有两块木板交叉起来接雨水,问最多能接多少.   分析:题目描述很简单,不过有些细节还是需要注意到,如下图几种情况:   #include<stdio.h> #include<math.h> #include<string.h> #include<algorithm> using namespace std; ; ; ; int sign(double val) { ; ; ; } struct Point { double x, y; Point(…

题意:n页书,然后n个数表示各个知识点ai,然后,输出最小覆盖的页数. #include<iostream> #include<cstdio> #include<set> #include<map> using namespace std; ; int num[maxn]; int main(){ int n; set<int>ss; map<int, int>mm; scanf("%d", &n); ;…

Xuanxuan has n sticks of different length. One day, she puts all her sticks in a line, represented by S1, S2, S3, ...Sn. After measuring the length of each stick Sk (1 <= k <= n), she finds that for some sticks Si and Sj (1<= i < j <= n), e…

Arbitrage Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 21300   Accepted: 9079 Description Arbitrage is the use of discrepancies in currency exchange rates to transform one unit of a currency into more than one unit of the same currenc…

Knight Moves Problem Description A friend of you is doing research on the Traveling Knight Problem (TKP) where you are to find the shortest closed tour of knight moves that visits each square of a given set of n squares on a chessboard exactly once.…

Window Pains Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 2027   Accepted: 1025 Description Boudreaux likes to multitask, especially when it comes to using his computer. Never satisfied with just running one application at a time, he…

That Nice Euler Circuit Time Limit: 3000MS   Memory Limit: 65536K Total Submissions: 1975   Accepted: 624 Description Little Joey invented a scrabble machine that he called Euler, after the great mathematician. In his primary school Joey heard about…

[题意] 牛要到河对岸,在与河岸垂直的一条线上,河中有N块石头,给定河岸宽度L,以及每一块石头离牛所在河岸的距离, 现在去掉M块石头,要求去掉M块石头后,剩下的石头之间以及石头与河岸的最小距离的最大值. [解法] 用二分做,但是开始写了三个版本的二分,全都wa. 无赖看了别人的二分,还是不理解,为什么他们写的就能过. 反复思索后,终于明白了:关键在于题目求的是什么. 做题思想:二分所求的最小距离的最大值mid,记录可以去掉的石头块数cnt(注意:当相邻的石头的距离小于等于mid,就可以去掉),…

所谓双向广度搜索指的是搜索沿两个方向同时进行:(1)正向搜索:从初始结点向目标结点方向搜索:(2)逆向搜索:从目标结点向初始结点方向搜索:当两个方向的搜索生成同一子结点时终止此搜索过程. 广度双向搜索通常有两种方法:(1)两个方向交替扩展:(2)选择结点个数较少的那个方向先扩展.方法(2)克服了两方向结点的生成速度不平衡的状态,可明显提高效率. [例1]Knight Moves (POJ 1915) Description Background Mr Somurolov, fabulous ch…

POJ 1852 Ants POJ 2386 Lake Counting POJ 1979 Red and Black AOJ 0118 Property Distribution AOJ 0333 Ball POJ 3009 Curling 2.0 AOJ 0558 Cheese POJ 3669 Meteor Shower AOJ 0121 Seven Puzzle POJ 2718 Smallest Difference POJ 3187 Backward Digit Sums POJ 3…

-----------------------------最优化问题------------------------------------- ----------------------常规动态规划  SOJ1162 I-Keyboard  SOJ1685 Chopsticks SOJ1679 Gangsters SOJ2096 Maximum Submatrix  SOJ2111 littleken bg SOJ2142 Cow Exhibition  SOJ2505 The County…

KUANGBIN带你飞 全专题整理 https://www.cnblogs.com/slzk/articles/7402292.html 专题一 简单搜索 POJ 1321 棋盘问题    //2019.3.18 POJ 2251 Dungeon Master POJ 3278 Catch That Cow  //4.8 POJ 3279 Fliptile POJ 1426 Find The Multiple  //4.8 POJ 3126 Prime Path POJ 3087 Shuffle…

国际 C 语言混乱代码大赛(IOCCC, The International Obfuscated C Code Contest)是一项国际编程赛事,从 1984 年开始,每年举办一次(1997年.1999年.2002年.2003年和2006年例外).目的是写出最有创意的最让人难以理解的C语言代码. 获奖者列表 1984 anonymous    prints hello world, where read is write 1984 decot    prints garbage, weird…

ID name status one word  POJ 5437 Alisha’s Party 赛后AC. 优先队列,模拟.对时间t排序 POJ 5438 Ponds 赛后AC 循环链表 POJ 5439 Aggregated Counting     POJ 5440 Clock Adjusting     POJ 5441 Travel 赛后AC 并查集+离线化.注音可以休息. POJ 5442 Favorite Donut     POJ 5443 The Water Problem 题…

Popular Cows Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 29642   Accepted: 11996 Description Every cow's dream is to become the most popular cow in the herd. In a herd of N (1 <= N <= 10,000) cows, you are given up to M (1 <= M &…

[kuangbin带你飞]专题1-23 专题一 简单搜索 POJ 1321 棋盘问题POJ 2251 Dungeon MasterPOJ 3278 Catch That CowPOJ 3279 FliptilePOJ 1426 Find The MultiplePOJ 3126 Prime PathPOJ 3087 Shuffle'm UpPOJ 3414 PotsFZU 2150 Fire GameUVA 11624 Fire!POJ 3984 迷宫问题HDU 1241 Oil Deposit…

网站:CSUST 8月1日 先总结下,不得不说死的很惨,又是第三就不说了,一共7道题,AC了5道,但是有一个组三个人是做的个人赛,有两人AK了.......Orz,然后深搜还是大问题,宽搜倒是不急了. 而且,其中还有一题是水过去的.唉,不说了,好好看.╮(╯▽╰)╭ A    骑士历遍问题:给出m,n,指大小为m*n的棋盘,问骑士是否能遍历整个棋盘,要求把路径打出来,(要按字典序)A Knight's Journey   POJ 2488 网上找到了个很好地代码,解释很清晰:http://www…

目录 笔记整理 计划 要学的东西 缺省源 要做的题 搜索 高斯消元 矩阵 排列组合 2019.7.9 2019.7.10 kmp ac自动机 2019.7.11 2019.7.15 笔记整理 1.同余and乘法逆元学习笔记 2.排列组合学习笔记 3.字符串Hash学习笔记 4.树状数组学习笔记 5.线段树学习笔记 6.ST表学习笔记 7.树形DP学习笔记 8.位运算学习笔记 9.二分答案学习笔记 还没写 ,咕咕咕 10.区间dp学习笔记 待更新例题 11.背包问题 12.STL学习笔记 13.字…

专题一 简单搜索 POJ 1321 棋盘问题POJ 2251 Dungeon MasterPOJ 3278 Catch That CowPOJ 3279 FliptilePOJ 1426 Find The MultiplePOJ 3126 Prime PathPOJ 3087 Shuffle'm UpPOJ 3414 PotsFZU 2150 Fire GameUVA 11624 Fire!POJ 3984 迷宫问题HDU 1241 Oil DepositsHDU 1495 非常可乐HDU 26…

1.链接地址: http://bailian.openjudge.cn/practice/1915 http://poj.org/problem?id=1915 2.题目: 总Time Limit: 1000ms Memory Limit: 65536kB Description BackgroundMr Somurolov, fabulous chess-gamer indeed, asserts that no one else but him can move knights from o…

POJ 1915 Knight Moves Knight Moves   Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 29912   Accepted: 14058 Description Background Mr Somurolov, fabulous chess-gamer indeed, asserts that no one else but him can move knights from one pos…

POJ 2243 Knight Moves A friend of you is doing research on the Traveling Knight Problem (TKP) where you are to find the shortest closed tour of knight moves that visits each square of a given set of n squares on a chessboard exactly once. He thinks t…

    A+B Problem Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 311263   Accepted: 171333 Description Calculate a+b Input Two integer a,b (0<=a,b<=10) Output Output a+b   Sample Input 1 2 Sample Output 3 计算两个整数的和 解决思路 这是经典水题了,每个OJ必有的.题目…

题目链接:http://vjudge.net/contest/view.action?cid=51369#problem/A   (A - Children of the Candy Corn) http://poj.org/problem?id=2488   (A Knight's Journey) (不知道为什么,名字竟然不同哇~~~~还是poj 改名改得好) 题目意思:给出一个p * q 的棋盘,行用阿拉伯数字1,2,...,p-1, p 来表示,列从大写字母'A'开始表示.我这里为了简化…

转载请注明出处:http://blog.csdn.net/u012860063?viewmode=contents 题目链接:http://poj.org/problem? id=2488 ----------------------------------------------------------------------------------------------------------------------------------------------------------…

RMQ+二分....枚举 i  ,找比 i 小的第一个元素,再找之间的第一个最大元素.....                   Sticks Problem Time Limit: 6000MS   Memory Limit: 65536K Total Submissions: 9338   Accepted: 2443 Description Xuanxuan has n sticks of different length. One day, she puts all her stick…