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<center C. Parity Game</center 题目连接：http://www.codeforces.com/contest/298/problem/C DescriptionYou are fishing with polar bears Alice and Bob. While...
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posted @ 2016-01-09 15:18
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<center B. Sail</center 题目连接：http://www.codeforces.com/contest/298/problem/B DescriptionThe polar bears are going fishing. They plan to sail from (s...
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posted @ 2016-01-09 15:07
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<center A. Snow Footprints</center 题目连接：http://www.codeforces.com/contest/298/problem/A DescriptionThere is a straight snowy road, divided into n bl...
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posted @ 2016-01-09 14:56
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<center E. Hexagons</center 题目连接：http://codeforces.com/contest/615/problem/E DescriptionAyrat is looking for the perfect code. He decided to start h...
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posted @ 2016-01-09 11:55
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<center D. Multipliers</center 题目连接：http://codeforces.com/contest/615/problem/D DescriptionAyrat has number n, represented as it's prime factorizati...
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posted @ 2016-01-09 10:51
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<center C. Running Track</center 题目连接：http://www.codeforces.com/contest/615/problem/C DescriptionA boy named Ayrat lives on planet AMI 1511. Each in...
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posted @ 2016-01-09 09:56
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<center B. Longtail Hedgehog</center 题目连接：http://www.codeforces.com/contest/615/problem/B DescriptionThis Christmas Santa gave Masha a magic picture...
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posted @ 2016-01-09 09:19
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<center A. Bulbs</center 题目连接：http://www.codeforces.com/contest/615/problem/A DescriptionVasya wants to turn on Christmas lights consisting of m bul...
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posted @ 2016-01-09 09:14
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<center 联合权值</center 题目连接：http://codevs.cn/problem/3728/ Description给一棵树，然后每相距离为2的点都会产生一个联合权值，等于Wa Wb问你联合权值最大的是多少，所有联合权值的和是多少 Input第一行nn 1行 x y 表示xy...
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posted @ 2016-01-01 22:26
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<center D. New Year and Ancient Prophecy</center 题目连接：http://www.codeforces.com/contest/611/problem/C DescriptionLimak is a little polar bear. In th...
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posted @ 2015-12-31 12:58
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<center C. New Year and Domino</center 题目连接：http://www.codeforces.com/contest/611/problem/C DescriptionThey say "years are like dominoes, tumbling o...
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posted @ 2015-12-31 12:55
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B. New Year and Old Property 题目连接： http://www.codeforces.com/contest/611/problem/B Description The year 2015 is almost over. Limak is a little polar b
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posted @ 2015-12-31 11:26
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<center A. New Year and Days</center 题目连接：http://www.codeforces.com/contest/611/problem/A DescriptionToday is Wednesday, the third day of the week. ...
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posted @ 2015-12-31 11:21
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<center D. Vika and Segments</center 题目连接：http://www.codeforces.com/contest/610/problem/D DescriptionVika has an infinite sheet of squared paper. In...
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posted @ 2015-12-28 11:10
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<center C. Harmony Analysis</center 题目连接：http://www.codeforces.com/contest/610/problem/C DescriptionThe semester is already ending, so Danil made an...
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posted @ 2015-12-28 11:06
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<center B. Vika and Squares</center 题目连接：http://www.codeforces.com/contest/610/problem/B DescriptionVika has n jars with paints of distinct colors. ...
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posted @ 2015-12-28 10:58
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<center A. Pasha and Stick</center 题目连接：http://www.codeforces.com/contest/610/problem/A DescriptionPasha has a wooden stick of some positive integer...
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posted @ 2015-12-28 10:49
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<center D. The Union of k Segments</center 题目连接：http://www.codeforces.com/contest/612/problem/D DescriptionYou are given n segments on the coordinat...
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posted @ 2015-12-28 10:45
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<center C. Replace To Make Regular Bracket Sequence</center 题目连接：http://www.codeforces.com/contest/612/problem/C DescriptionYou are given string s c...
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posted @ 2015-12-28 10:40
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<center B. HDD is Outdated Technology</center 题目连接：http://www.codeforces.com/contest/612/problem/B DescriptionHDD hard drives group data by sectors....
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posted @ 2015-12-28 10:36
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<center A. The Text Splitting</center 题目连接：http://www.codeforces.com/contest/612/problem/A DescriptionYou are given the string s of length n and the...
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posted @ 2015-12-28 10:32
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<center D. Fox And Jumping</center 题目连接：http://codeforces.com/contest/510/problem/D DescriptionFox Ciel is playing a game. In this game there is an ...
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posted @ 2015-12-26 22:27
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<center N M bulbs</center 题目连接：http://codeforces.com/contest/510/problem/C DescriptionN M个灯泡排成一片，也就是排成一个N M的矩形，有些开着，有些关着，为了节约用电，你要关上所有灯，但是你又很懒。刚好有个熊...
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posted @ 2015-12-26 22:09
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<center C. Fox And Names</center 题目连接：http://codeforces.com/contest/510/problem/C DescriptionFox Ciel is going to publish a paper on FOCS (Foxes Ope...
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posted @ 2015-12-25 22:36
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<center B. Fox And Two Dots</center 题目连接：http://codeforces.com/contest/510/problem/B DescriptionFox Ciel is playing a mobile puzzle game called "Two...
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posted @ 2015-12-25 21:52
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<center A. Fox And Snake</center 题目连接：http://codeforces.com/contest/510/problem/A DescriptionFox Ciel starts to learn programming. The first task is...
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posted @ 2015-12-25 21:39
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<center D. Zuma</center 题目连接：http://www.codeforces.com/contest/608/problem/D DescriptionGenos recently installed the game Zuma on his phone. In Zuma...
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posted @ 2015-12-25 11:10
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<center C. Chain Reaction</center 题目连接：http://www.codeforces.com/contest/608/problem/C DescriptionThere are n beacons located at distinct positions ...
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posted @ 2015-12-25 11:03
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<center B. Hamming Distance Sum</center 题目连接：http://www.codeforces.com/contest/608/problem/A DescriptionGenos needs your help. He was asked to solve...
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posted @ 2015-12-25 10:51
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<center A. Saitama Destroys Hotel</center 题目连接：http://www.codeforces.com/contest/608/problem/A DescriptionSaitama accidentally destroyed a hotel aga...
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posted @ 2015-12-25 10:46
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<center 1061: [Noi2008]志愿者招募</center 题目连接：http://www.lydsy.com/JudgeOnline/problem.php?id=1061 Description申奥成功后，布布经过不懈努力，终于成为奥组委下属公司人力资源部门的主管。布布刚上任就...
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posted @ 2015-12-23 00:17
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<center 4318: OSU!</center 题目连接：http://www.lydsy.com/JudgeOnline/problem.php?id=4318 Descriptionosu 是一款群众喜闻乐见的休闲软件。 我们可以把osu的规则简化与改编成以下的样子: 一共有n次操作，...
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posted @ 2015-12-22 23:39
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<center 1295: [SCOI2009]最长距离</center 题目连接：http://www.lydsy.com/JudgeOnline/problem.php?id=1295 Descriptionwindy有一块矩形土地，被分为 N\ M 块 1\ 1 的小格子。 有的格子含有障...
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posted @ 2015-12-21 22:05
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代码： struct Bit { vector<int a; int sz; void init(int n) { sz=n; for(int i=1;i<=n+5;i++) a.push_back(0); } int lowbit(int x) { return x&( x); } int qu...
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posted @ 2015-12-21 14:55
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<center E. Minimum spanning tree for each edge</center 题目连接：http://www.codeforces.com/contest/609/problem/E DescriptionConnected undirected weighted...
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posted @ 2015-12-20 03:15
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<center D. Gadgets for dollars and pounds</center 题目连接：http://www.codeforces.com/contest/609/problem/C DescriptionNura wants to buy k gadgets. She h...
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posted @ 2015-12-20 03:11
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<center C. Load Balancing</center 题目连接：http://www.codeforces.com/contest/609/problem/C DescriptionIn the school computer room there are n servers wh...
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posted @ 2015-12-20 03:08
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<center B. The Best Gift</center 题目连接：http://www.codeforces.com/contest/609/problem/B DescriptionEmily's birthday is next week and Jack has decided ...
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posted @ 2015-12-20 03:05
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<center A. USB Flash Drives</center 题目连接：http://www.codeforces.com/contest/609/problem/A DescriptionSean is trying to save a large file to a USB fla...
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posted @ 2015-12-20 03:03
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<center Binary Tree</center 题目连接：http://acm.hdu.edu.cn/showproblem.php?pid=5573 DescriptionThe Old Frog King lives on the root of an infinite tree. ...
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posted @ 2015-12-19 16:25
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