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原创 Eliminate the Conflict(2 - sat)

Eliminate the ConflictTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1838    Accepted Submission(s): 789Problem DescriptionConflicts are...

2014-12-04 16:16:25 215 1

原创 Juice Extractor(树状数组 + dp)

  Juice Extractor Jerry loses himself in the interesting game: Fruit Ninja. Fruit Ninja is a game of iPhone and iPad in which the players cut the fruits coming from the bottom of the screen a...

2014-12-01 21:41:19 260

原创 Hacking Cypher(数学)

C. Hacking Cyphertime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputPolycarpus participates in a competition for hack...

2014-11-29 17:26:16 185

原创 Diverse Permutation(构造)

C. Diverse Permutationtime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputPermutation p is an ordered set of integers ...

2014-11-29 14:06:55 181

原创 Flowers(DP)

D. Flowerstime limit per test1.5 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputWe saw the little game Marmot made for Mole's lunch. ...

2014-11-29 11:50:41 141

原创 Beam Cannon(线段树 + 扫描线)

Beam CannonTime Limit: 3000/1500 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 225    Accepted Submission(s): 87Problem DescriptionRecently, the γ galaxies b...

2014-11-04 16:10:30 167

原创 Game with Pearls(二分图)

Game with PearlsTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 145    Accepted Submission(s): 96Problem DescriptionTom and Jerry are pla...

2014-11-03 18:04:01 85

原创 Battle ships(二分图)

Battle shipsTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 0    Accepted Submission(s): 0Problem DescriptionDear contestant, now you a...

2014-11-02 19:33:09 99

原创 Qin Shi Huang's National Road System(最小生成树 + LCA)

Qin Shi Huang's National Road SystemTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 3750    Accepted Submission(s): 1305Problem Descriptio...

2014-11-02 11:33:20 202

原创 Coprime(容斥定理 + 筛选)

CoprimeTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 262144/262144 K (Java/Others)Total Submission(s): 400    Accepted Submission(s): 178Problem DescriptionThere are n people standing...

2014-10-28 20:36:45 534

原创 Known Notation(分析模拟)

Known NotationTime Limit: 2 Seconds      Memory Limit: 65536 KBDo you know reverse Polish notation (RPN)? It is a known notation in the area of mathematics and computer science. It is also known...

2014-10-28 17:46:14 128

原创 Domination(概率DP)

DominationTime Limit: 8 Seconds      Memory Limit: 131072 KB      Special JudgeEdward is the headmaster of Marjar University. He is enthusiastic about chess and often plays chess with his frien...

2014-10-21 20:18:40 119

原创 Design the city(LCA + RMQ)

Design the cityTime Limit: 1 Second      Memory Limit: 32768 KBCerror is the mayor of city HangZhou. As you may know, the traffic system of this city is so terrible, that there are traffic jams ...

2014-10-09 13:15:48 132

原创 Connections between cities(LCA + 并查集)

Connections between citiesTime Limit: 10000/5000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 5067    Accepted Submission(s): 1410Problem DescriptionAfter W...

2014-10-02 14:21:27 102

原创 Distance Queries(LCA 在线算法 RMQ)

Distance QueriesTime Limit: 2000MS Memory Limit: 30000KTotal Submissions: 9500 Accepted: 3332Case Time Limit: 1000MSDescriptionFarmer John's cows refused to run in...

2014-10-02 13:31:16 107

原创 How far away ?(LCA 在线算法RMQ)

How far away ?Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 5810    Accepted Submission(s): 2182Problem DescriptionThere are n houses i...

2014-10-02 13:01:21 196

原创 Nearest Common Ancestors(LCA 离线算法)

Nearest Common AncestorsTime Limit: 1000MS Memory Limit: 10000KTotal Submissions: 18912 Accepted: 10007DescriptionA rooted tree is a well-known data structure in compute...

2014-09-30 17:41:43 76

原创 24 Game(数学构造)

C. 24 Gametime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputLittle X used to play a card game called "24 Game", but ...

2014-09-23 17:15:03 171

原创 Explosion(bitset 优化的传递闭包 + 概率)

ExplosionTime Limit: 6000/3000 MS (Java/Others)    Memory Limit: 262144/262144 K (Java/Others)Total Submission(s): 259    Accepted Submission(s): 67Problem DescriptionEveryone knows Matt enjoys...

2014-09-23 15:59:24 183

原创 Saving Tang Monk(BFS)

Saving Tang MonkTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 579    Accepted Submission(s): 217Problem Description《Journey to the West...

2014-09-23 15:09:20 116

原创 Information Graph(并查集)

E. Information Graphtime limit per test1 secondmemory limit per test512 megabytesinputstandard inputoutputstandard outputThere are n employees working in company "X" (...

2014-09-18 18:06:36 114

原创 233 Matrix(矩阵快速幂)

233 MatrixTime Limit: 10000/5000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 553    Accepted Submission(s): 345Problem DescriptionIn our daily life we ofte...

2014-09-16 19:55:40 187 1

原创 Number Sequence(二进制)

Number SequenceTime Limit: 4000/2000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 1886    Accepted Submission(s): 561Special JudgeProblem DescriptionThere...

2014-09-15 19:17:28 85

原创 Dice(BFS)

DiceTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 1109    Accepted Submission(s): 584Problem DescriptionThere are 2 special dices on ...

2014-09-15 19:05:59 68

原创 Walk(概率DP)

WalkTime Limit: 30000/15000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 291    Accepted Submission(s): 200Special JudgeProblem DescriptionI used to think I...

2014-09-15 18:59:16 78

原创 Untrusted Patrol(DFS)

Untrusted PatrolTime Limit: 3 Seconds      Memory Limit: 65536 KBEdward is a rich man. He owns a large factory for health drink production. As a matter of course, there is a large warehouse in t...

2014-09-09 16:07:50 87

原创 LITTLE SHOP OF FLOWERS(DP)

LITTLE SHOP OF FLOWERSTime Limit: 1000MS Memory Limit: 10000KTotal Submissions: 18300 Accepted: 8435DescriptionYou want to arrange the window of your flower shop in a mo...

2014-09-06 15:34:15 62

原创 月老的难题(二分图最大匹配)

月老的难题时间限制:1000 ms  |  内存限制:65535 KB难度:4 描述月老准备给n个女孩与n个男孩牵红线,成就一对对美好的姻缘。现在,由于一些原因,部分男孩与女孩可能结成幸福的一家,部分可能不会结成幸福的家庭。现在已知哪些男孩与哪些女孩如果结婚的话,可以结成幸福的家庭,月老准备促成尽可能多的幸福家庭,请你帮他找出最多可能促成的幸福家庭数量吧...

2014-09-06 11:02:26 82

原创 Battle City(BFS)

Battle CityTime Limit: 1000MS Memory Limit: 65536KTotal Submissions: 6880 Accepted: 2326DescriptionMany of us had played the game "Battle city" in our childhood, and som...

2014-09-06 10:35:09 67

原创 Jungle Roads(最小生成树 + 并查集)

Jungle RoadsTime Limit: 1000MS Memory Limit: 10000KTotal Submissions: 19454 Accepted: 8919DescriptionThe Head Elder of the tropical island of Lagrishan has a problem. ...

2014-09-06 09:57:48 122

原创 Stockbroker Grapevine(Floyd)

Stockbroker GrapevineTime Limit: 1000MS Memory Limit: 10000KTotal Submissions: 27232 Accepted: 15090DescriptionStockbrokers are known to overreact to rumours. You have b...

2014-09-05 23:26:06 71

原创 Cow Contest(Floyd 传递闭包)

Cow ContestTime Limit: 1000MS Memory Limit: 65536KTotal Submissions: 7104 Accepted: 3921DescriptionN (1 ≤ N ≤ 100) cows, conveniently numbered 1..N, are participating ...

2014-09-05 15:54:07 79

原创 网络的可靠性(杂)

网络的可靠性时间限制:3000 ms  |  内存限制:65535 KB难度:3 描述A公司是全球依靠的互联网解决方案提供商,也是2010年世博会的高级赞助商。它将提供先进的网络协作技术,展示其”智能+互联“的生活概念,同时为参观者提供高品质的个人体验和互动,以”信息通信,尽情城市梦想”为主题贯穿。借助奇幻的剧场大屏幕和特效,展现信息通信技术的应用前景,通过生动...

2014-09-05 11:54:08 131

原创 星际之门(cayley 定理)

星际之门(一)时间限制:3000 ms  |  内存限制:65535 KB难度:3 描述公元3000年,子虚帝国统领着N个星系,原先它们是靠近光束飞船来进行旅行的,近来,X博士发明了星际之门,它利用虫洞技术,一条虫洞可以连通任意的两个星系,使人们不必再待待便可立刻到达目的地。帝国皇帝认为这种发明很给力,决定用星际之门把自己统治的各个星系连结在一起。可以证...

2014-09-05 10:35:26 89

原创 校园网络(强连通分量)

校园网络时间限制:3000 ms  |  内存限制:65535 KB难度:5 描述南阳理工学院共有M个系,分别编号1~M,其中各个系之间达成有一定的协议,如果某系有新软件可用时,该系将允许一些其它的系复制并使用该软件。但该允许关系是单向的,即:A系允许B系使用A的软件时,B未必一定允许A使用B的软件。现在,请你写一个程序,根据各个系之间达成的协议情况,计算出...

2014-09-05 09:56:57 86

原创 修路方案(次小生成树)

修路方案时间限制:3000 ms  |  内存限制:65535 KB难度:5 描述南将军率领着许多部队,它们分别驻扎在N个不同的城市里,这些城市分别编号1~N,由于交通不太便利,南将军准备修路。现在已经知道哪些城市之间可以修路,如果修路,花费是多少。现在,军师小工已经找到了一种修路的方案,能够使各个城市都联通起来,而且花费最少。但是,南将军说,这个修...

2014-09-04 14:38:58 209

原创 The Unique MST(次小生成树)

The Unique MSTTime Limit: 1000MS Memory Limit: 10000KTotal Submissions: 20786 Accepted: 7314DescriptionGiven a connected undirected graph, tell if its minimum spanning t...

2014-09-04 14:36:40 69

原创 城市平乱(最短路)

城市平乱时间限制:1000 ms  |  内存限制:65535 KB难度:4 描述南将军统领着N个部队,这N个部队分别驻扎在N个不同的城市。他在用这N个部队维护着M个城市的治安,这M个城市分别编号从1到M。现在,小工军师告诉南将军,第K号城市发生了暴.乱,南将军从各个部队都派遣了一个分队沿最近路去往暴.乱城市平乱。现在已知在任意两个城市之间的路行军所...

2014-09-04 11:54:38 91

原创 一笔画问题(欧拉回路 + 并查集)

一笔画问题时间限制:3000 ms  |  内存限制:65535 KB难度:4 描述zyc从小就比较喜欢玩一些小游戏,其中就包括画一笔画,他想请你帮他写一个程序,判断一个图是否能够用一笔画下来。规定,所有的边都只能画一次,不能重复画。  输入第一行只有一个正整数N(N<=10)表示测试数据的组数。每组测试数据的第一行有两个正整数P,...

2014-09-03 17:28:34 129

原创 布线问题(最小生成树 + 并查集)

布线问题时间限制:1000 ms  |  内存限制:65535 KB难度:4 描述南阳理工学院要进行用电线路改造,现在校长要求设计师设计出一种布线方式,该布线方式需要满足以下条件:1、把所有的楼都供上电。2、所用电线花费最少 输入第一行是一个整数n表示有n组测试数据。(n<5)每组测试数据的第一行是两个整数v,e.v表示学校里楼的总个数(v<...

2014-09-03 17:07:24 94

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