滴水穿石，慢慢积累，总会有成果

Farm IrrigationTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 7037    Accepted Submission(s): 3011Problem DescriptionBenny has a sp

食物链Time Limit: 1000MS Memory Limit: 10000KTotal Submissions: 55576 Accepted: 16297Description动物王国中有三类动物A,B,C，这三类动物的食物链构成了有趣的环形。A吃B， B吃C，C吃A。现有N个动物，以1－N编号。每个动物都是A,

Find them, Catch themTime Limit: 1000MS Memory Limit: 10000KTotal Submissions: 37663 Accepted: 11612DescriptionThe police office in Tadu City decides to say ends to

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每组测试数据的第一行有两个正整数P,Q(P随后的Q行，每行有两个正整数A,B(0输出如果存在符

D-CityTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65535/65535 K (Java/Others)Total Submission(s): 2887    Accepted Submission(s): 1020Problem DescriptionLuxer is a really bad g

问题描述众所周知，萌萌哒六花不擅长数学，所以勇太给了她一些数学问题做练习，其中有一道是这样的：给出一张 nn 个点 n+1n+1 条边的无向图，你可以选择一些边（至少一条）删除。现在勇太想知道有多少种方案使得删除之后图依然联通。当然，这个问题对于萌萌哒六花来说实在是太难了，你可以帮帮她吗？输入描述第一行一个整数表示数据组数 T(T≤30)。每组数据的第一行是一个整数 n

Cube Stacking Time Limit: 2000MS Memory Limit: 30000K Total Submissions: 23347 Accepted: 8186 Case Time Limit: 1000MSDescription Farmer John and Betsy are playing a game with N (1 <= N

The SuspectsTime Limit: 1000MS Memory Limit: 20000K Total Submissions: 33167 Accepted: 16083Description Severe acute respiratory syndrome (SARS), an atypical pneumonia of unknown aetiolog

Is It A Tree?Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 17568    Accepted Submission(s): 3944Problem DescriptionA tree is a wel

find the most comfortable roadTime Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 5340    Accepted Submission(s): 2316Problem Description

Work Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1201    Accepted Submission(s): 734Problem DescriptionIt’s an interesti

畅通工程Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 37132    Accepted Submission(s): 19683Problem Description某省调查城镇交通状况，得到现有城镇道路统计表，

How Many TablesTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 17998    Accepted Submission(s): 8856Problem DescriptionToday is Igna

转自：http://blog.youkuaiyun.com/dellaserss/article/details/7724401并查集是我暑假从高手那里学到的一招，觉得真是太精妙的设计了。以前我无法解决的一类问题竟然可以用如此简单高效的方法搞定。不分享出来真是对不起party了。（party：我靠，关我嘛事啊？我跟你很熟么？）来看一个实例，杭电1232畅通工程首先在地图上给你若干个城镇，这

Ice_cream's world ITime Limit: 3000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 793    Accepted Submission(s): 464Problem Descriptionice_cream's

More is betterTime Limit: 5000/1000 MS (Java/Others)    Memory Limit: 327680/102400 K (Java/Others)Total Submission(s): 18615    Accepted Submission(s): 6848Problem DescriptionMr Wang want

Pet Time Limit : 4000/2000ms (Java/Other)   Memory Limit : 32768/32768K (Java/Other)Total Submission(s) : 8   Accepted Submission(s) : 6Problem DescriptionOne day, Lin Ji wake up in the mornin

Problem DescriptionFive hundred years later, the number of dragon balls will increase unexpectedly, so it's too difficult for Monkey King(WuKong) to gather all of the dragon balls together.H

Junk-Mail FilterTime Limit: 15000/8000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 7703    Accepted Submission(s): 2431Problem DescriptionRecognizing

小希的迷宫Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 34428    Accepted Submission(s): 10547Problem Description上次Gardon的迷宫城堡小希玩了很久（见P