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暴兵的卿学姐 题目连接： http://acm.uestc.edu.cn/ /problem/show/1281 Description 沈宝宝又和卿学姐开始玩SC2了！ 自从沈宝宝学会新的阵型后，就把卿学姐干的不要不要的，每次都把卿学姐按在地上摩擦。 卿学姐是我们的学姐啊，不能就这样认怂啊。 然后 阅读全文
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B. The least round way 题目连接： http://www.codeforces.com/contest/2/problem/B Description There is a square matrix n × n, consisting of non negative inte 阅读全文
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A. Winner 题目连接： http://www.codeforces.com/contest/2/problem/A Description The winner of the card game popular in Berland "Berlogging" is determined ac 阅读全文
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C. Ancient Berland Circus 题目连接： http://www.codeforces.com/contest/1/problem/C Description Nowadays all circuses in Berland have a round arena with dia 阅读全文
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E. Clockwork Bomb 题目连接： http://www.codeforces.com/contest/650/problem/E Description My name is James diGriz, I'm the most clever robber and treasure h 阅读全文
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D. Zip line 题目连接： http://www.codeforces.com/contest/650/problem/D Description Vasya has decided to build a zip line on trees of a nearby forest. He wa 阅读全文
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E. Table Compression 题目连接： http://www.codeforces.com/contest/651/problem/E Description Little Petya is now fond of data compression algorithms. He has 阅读全文
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D. Image Preview 题目连接： http://www.codeforces.com/contest/651/problem/D Description Vasya's telephone contains n photos. Photo number 1 is currently op 阅读全文
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C. Watchmen 题目连接： http://www.codeforces.com/contest/651/problem/C Description Watchmen are in a danger and Doctor Manhattan together with his friend D 阅读全文
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B. Beautiful Paintings 题目连接： http://www.codeforces.com/contest/651/problem/B Description There are n pictures delivered for the new exhibition. The i 阅读全文
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A. Joysticks 题目连接： http://www.codeforces.com/contest/651/problem/A Description Friends are going to play console. They have two joysticks and only one 阅读全文
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B. Spreadsheets 题目连接： http://www.codeforces.com/contest/1/problem/B Description In the popular spreadsheets systems (for example, in Excel) the follow 阅读全文
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Deletion 题目连接： http://acm.hdu.edu.cn/showproblem.php?pid=5639 Description There is an undirected graph G with n vertices and m edges. Every time, you 阅读全文
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Toposort 题目连接： http://acm.hdu.edu.cn/showproblem.php?pid=5638 Description There is a directed acyclic graph with n vertices and m edges. You are allow 阅读全文
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Transform 题目连接： http://acm.hdu.edu.cn/showproblem.php?pid=5637 Description A list of n integers are given. For an integer x you can do the following o 阅读全文
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Shortest Path 题目连接： http://acm.hdu.edu.cn/showproblem.php?pid=5636 Description There is a path graph G=(V,E) with n vertices. Vertices are numbered fr 阅读全文
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1640 天气晴朗的魔法 题目连接： http://www.51nod.com/onlineJudge/questionCode.html !problemId=1640 Description 51nod魔法学校近日开展了主题为“天气晴朗”的魔法交流活动。 N名魔法师按阵法站好，之后选取N 1条魔 阅读全文
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E. Product Sum 题目连接： http://www.codeforces.com/contest/631/problem/E Description Blake is the boss of Kris, however, this doesn't spoil their friendsh 阅读全文
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D. Messenger 题目连接： http://www.codeforces.com/contest/631/problem/D Description Each employee of the "Blake Techologies" company uses a special messagi 阅读全文
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C. Report 题目连接： http://www.codeforces.com/contest/631/problem/C Description Each month Blake gets the report containing main economic indicators of th 阅读全文
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B. Print Check 题目连接： http://www.codeforces.com/contest/631/problem/B Description Kris works in a large company "Blake Technologies". As a best enginee 阅读全文
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A. Interview 题目连接： http://www.codeforces.com/contest/631/problem/A Description Blake is a CEO of a large company called "Blake Technologies". He loves 阅读全文
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Preorder Test 题目连接： http://www.codeforces.com/contest/627/problem/D Description For his computer science class, Jacob builds a model tree with sticks 阅读全文
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“问题：众所周知772002很喜欢马尾，所以他决定画几幅马尾送给他的女朋友。 772002会画m种马尾，772002还有n张纸，n张纸分别编号1到n，每张纸上只能画一种马尾。 然而772002的女朋友只喜欢其中t种马尾。并且772002的女朋友只喜欢偶数（因为这象征着成对成双）。 772002想知道 阅读全文
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772002画马尾 题目连接： http://acm.uestc.edu.cn/ /problem/show/1280 Description 众所周知772002很喜欢马尾，所以他决定画几幅马尾送给他的女朋友。 772002会画m种马尾，772002还有n张纸，n张纸分别编号1到n，每张纸上只能画 阅读全文
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班委选举 题目连接： http://acm.uestc.edu.cn/ /status/list?problemId=1279 Description 高考的脚步越来越近了……时间如山涧小溪一般悄无声息地流走，一去不复还……曾几何时嬉笑的最后一排，如今也已经被大大小小的书本填完，我们从未有过为一件事 阅读全文
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现在游戏开始！ “切，又是无聊的一周。”沈柯倚靠在墙边，不屑的说道。 “以生存为赌注，拼上性命寻找出路什么的，我才不会怕呢。”廖奇握紧拳头，自信地说道。 ...... “啊，为什么，为什么，游戏为什么又开始了？！怎么会这么快？！”，小郭蹲在角落里面，捂住头，瑟瑟发抖的样子。 ...... 我当然还是 阅读全文
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C. Package Delivery 题目连接： http://www.codeforces.com/contest/627/problem/C Description Johnny drives a truck and must deliver a package from his hometo 阅读全文
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F. Magic Matrix 题目连接： http://www.codeforces.com/contest/632/problem/F Description You're given a matrix A of size n × n. Let's call the matrix with no 阅读全文
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E. Thief in a Shop 题目连接： http://www.codeforces.com/contest/632/problem/E Description A thief made his way to a shop. As usual he has his lucky knapsac 阅读全文
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D. Longest Subsequence 题目连接： http://www.codeforces.com/contest/632/problem/D Description You are given array a with n elements and the number m. Consi 阅读全文
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C. The Smallest String Concatenation 题目连接： http://www.codeforces.com/contest/632/problem/C Description You're given a list of n strings a1, a2, ..., a 阅读全文
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B. Alice, Bob, Two Teams 题目连接： http://www.codeforces.com/contest/632/problem/B Description Alice and Bob are playing a game. The game involves splitti 阅读全文
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A. Grandma Laura and Apples 题目连接： http://www.codeforces.com/contest/632/problem/A Description Grandma Laura came to the market to sell some apples. Du 阅读全文
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D. Factory Repairs 题目连接： http://www.codeforces.com/contest/635/problem/D Description A factory produces thimbles in bulk. Typically, it can produce up 阅读全文
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C. XOR Equation 题目连接： http://www.codeforces.com/contest/635/problem/C Description Two positive integers a and b have a sum of s and a bitwise XOR of x 阅读全文
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B. sland Puzzle 题目连接： http://www.codeforces.com/contest/635/problem/B Description A remote island chain contains n islands, labeled 1 through n. Bidir 阅读全文
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A. Orchestra 题目连接： http://www.codeforces.com/contest/635/problem/A Description Paul is at the orchestra. The string section is arranged in an r × c re 阅读全文
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H. Fibonacci ish II 题目连接： http://codeforces.com/contest/633/problem/H Description Yash is finally tired of computing the length of the longest Fibonac 阅读全文
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E. Startup Funding 题目连接： http://codeforces.com/contest/633/problem/E Description An e commerce startup pitches to the investors to get funding. They h 阅读全文