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G. Yash And Trees 题目连接： http://www.codeforces.com/contest/633/problem/G Description Yash loves playing with trees and gets especially excited when the
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posted @ 2016-02-27 21:59
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D. Fibonacci ish 题目连接： http://www.codeforces.com/contest/633/problem/D Description Yash has recently learnt about the Fibonacci sequence and is very e
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posted @ 2016-02-27 21:18
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C. Spy Syndrome 2 题目连接： http://www.codeforces.com/contest/633/problem/C Description After observing the results of Spy Syndrome, Yash realised the err
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posted @ 2016-02-27 21:14
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B. A Trivial Problem 题目连接： http://www.codeforces.com/contest/633/problem/B Description Mr. Santa asks all the great programmers of the world to solve
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posted @ 2016-02-27 21:06
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A. Ebony and Ivory 题目连接： http://www.codeforces.com/contest/633/problem/A Description Dante is engaged in a fight with "The Savior". Before he can figh
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posted @ 2016-02-27 21:04
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posted @ 2016-02-26 12:12
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智商杯考试 题目连接： http://acm.uestc.edu.cn/ /problem/show/1277 Description 你是一个挂科选手。 你现在正在考试，你很方。 你参加的考试叫做智商杯考试。 这个考试很奇怪，考试一开始就把所有答案全部发给你了，但是并不告诉你答案和考试题目的对应关
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posted @ 2016-02-26 11:28
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C. Necklace 题目连接： http://www.codeforces.com/contest/613/problem/C Description Ivan wants to make a necklace as a present to his beloved girl. A neckla
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posted @ 2016-02-25 16:43
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B. Skills 题目连接： http://www.codeforces.com/contest/613/problem/B Description Lesha plays the recently published new version of the legendary game hackn
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posted @ 2016-02-25 16:07
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F. Xors on Segments 题目连接： http://www.codeforces.com/contest/620/problem/F Description You are given an array with n integers ai and m queries. Each qu
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posted @ 2016-02-25 15:30
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D. Professor GukiZ and Two Arrays 题目连接： http://www.codeforces.com/contest/620/problem/D Description Professor GukiZ has two arrays of integers, a and
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posted @ 2016-02-25 15:00
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F. Double Knapsack 题目连接： http://www.codeforces.com/contest/618/problem/F Description You are given two multisets A and B. Each multiset has exactly n
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posted @ 2016-02-24 15:32
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（原文是发送到UESTCACM微信的，所以欢迎大家关注哦~ 大家好，我是萌萌的微信酱！ 又到了一周一度难得的周三了哦，你们找到女朋友了吗？喵。 另外你们有没有想我呢？ 众人：没有。 呜呜呜呜呜…… （擦干眼泪。） 这周呢，我要讲的算法是二分法，至于为什么要讲这个算法呢，我才不会告诉你们是因为这周的每
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posted @ 2016-02-24 13:35
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E. Robot Arm 题目连接： http://www.codeforces.com/contest/618/problem/E Description Roger is a robot. He has an arm that is a series of n segments connecte
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posted @ 2016-02-24 11:04
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D. Rat Kwesh and Cheese 题目连接： http://www.codeforces.com/contest/621/problem/D Description Wet Shark asked Rat Kwesh to generate three positive real nu
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posted @ 2016-02-23 22:08
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D. Birthday 题目连接： http://www.codeforces.com/contest/623/problem/D Description A MIPT student named Misha has a birthday today, and he decided to celeb
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posted @ 2016-02-23 20:39
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C. Electric Charges 题目连接： http://www.codeforces.com/contest/623/problem/C Description Programmer Sasha is a student at MIPT (Moscow Institute of Physi
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posted @ 2016-02-23 13:27
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E. Frog Fights 题目连接： http://www.codeforces.com/contest/625/problem/E Description stap Bender recently visited frog farm and was inspired to create his
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posted @ 2016-02-22 23:59
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F. The Sum of the k th Powers 题目连接： http://www.codeforces.com/contest/622/problem/F Description There are well known formulas: , , . Also mathematicia
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posted @ 2016-02-22 14:55
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Rikka with Phi 题目连接： http://acm.hdu.edu.cn/showproblem.php?pid=5634 Description Rikka and Yuta are interested in Phi function (which is known as Euler
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posted @ 2016-02-22 13:23
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Rikka with Graph 题目连接： http://acm.hdu.edu.cn/showproblem.php?pid=5631 Description As we know, Rikka is poor at math. Yuta is worrying about this situa
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posted @ 2016-02-22 12:10
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E. Famil Door and Roads 题目连接： http://www.codeforces.com/contest/629/problem/E Description Famil Door’s City map looks like a tree (undirected connecte
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posted @ 2016-02-22 00:55
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D. Babaei and Birthday Cake 题目连接： http://www.codeforces.com/contest/629/problem/D Description As you know, every birthday party has a cake! This time,
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posted @ 2016-02-21 22:55
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C. Famil Door and Brackets 题目连接： http://www.codeforces.com/contest/629/problem/C Description As Famil Door’s birthday is coming, some of his friends (
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posted @ 2016-02-21 22:46
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B. Far Relative’s Problem 题目连接： http://www.codeforces.com/contest/629/problem/B Description Famil Door wants to celebrate his birthday with his friend
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posted @ 2016-02-21 22:15
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A. Far Relative’s Birthday Cake 题目连接： http://www.codeforces.com/contest/629/problem/A Description Door's family is going celebrate Famil Doors's birth
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posted @ 2016-02-21 22:04
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F. Bear and Fair Set 题目连接： http://www.codeforces.com/contest/628/problem/F Description Limak is a grizzly bear. He is big and dreadful. You were chill
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posted @ 2016-02-21 20:58
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E. Zbazi in Zeydabad 题目连接： http://www.codeforces.com/contest/628/problem/D Description A tourist wants to visit country Zeydabad for Zbazi (a local ga
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posted @ 2016-02-21 18:24
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D. Magic Numbers 题目连接： http://www.codeforces.com/contest/628/problem/D Description Consider the decimal presentation of an integer. Let's call a numbe
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posted @ 2016-02-21 13:52
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C. Bear and String Distance 题目连接： http://www.codeforces.com/contest/628/problem/C Description Limak is a little polar bear. He likes nice strings — st
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posted @ 2016-02-21 13:45
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B. New Skateboard 题目连接： http://www.codeforces.com/contest/628/problem/A Description Max wants to buy a new skateboard. He has calculated the amount of
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posted @ 2016-02-21 13:41
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A. Tennis Tournament 题目连接： http://www.codeforces.com/contest/628/problem/A Description A tennis tournament with n participants is running. The partici
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posted @ 2016-02-21 13:35
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4032: [HEOI2015]最短不公共子串 题目连接： http://www.lydsy.com/JudgeOnline/problem.php?id=4032 Description 在虐各种最长公共子串、子序列的题虐的不耐烦了之后，你决定反其道而行之。 一个串的“子串”指的是它的连续的一段，
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posted @ 2016-02-21 13:13
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4031: [HEOI2015]小Z的房间 题目连接： http://www.lydsy.com/JudgeOnline/problem.php?id=4031 Description 你突然有了一个大房子，房子里面有一些房间。事实上，你的房子可以看做是一个包含n m个格子的格状矩形，每个格子是一个
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posted @ 2016-02-20 18:59
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4029: [HEOI2015]定价 题目连接： http://www.lydsy.com/JudgeOnline/problem.php?id=4029 Description 在市场上有很多商品的定价类似于 999 元、4999 元、8999 元这样。它们和 1000 元、5000 元和 900
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posted @ 2016-02-20 17:18
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4028: [HEOI2015]公约数数列 题目连接： http://www.lydsy.com/JudgeOnline/problem.php?id=4028 Description 设计一个数据结构. 给定一个正整数数列 a_0, a_1, ..., a_{n 1}，你需要支持以下两种操作： 1
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posted @ 2016-02-20 16:39
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D. Wizards and Roads 题目连接： http://www.codeforces.com/contest/167/problem/D Description In some country live wizards. They love to build cities and roa
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posted @ 2016-02-19 21:20
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E. Wizards and Bets 题目连接： http://www.codeforces.com/contest/167/problem/E Description In some country live wizards. They like to make weird bets. Two
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posted @ 2016-02-19 18:34
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Kids in a Friendly Class 题目连接： http://codeforces.com/gym/100269/attachments Description Kevin resembles his class in primary school. There were girls
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posted @ 2016-02-18 23:16
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Garage 题目连接： http://codeforces.com/gym/100269/attachments Description Wow! What a lucky day! Your company has just won a social contract for building
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posted @ 2016-02-18 23:06
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