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题目链接：http://codeforces.com/problemset/problem/771/A点击打开链接 A. Bear and Friendship Condition time limit per test 1 second memory limit per test 256 megabytes input standard in

题目链接：https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=3138点击打开链接 I hope you know the beautiful Union-Find structure. In this problem, you’re to implemen

题目链接：http://poj.org/problem?id=1703点击打开链接 Find them, Catch them Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 47223   Accepted: 14544 Description

题目链接：http://poj.org/problem?id=1182点击打开链接 食物链 Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 77446   Accepted: 23074 Description 动物王国中有三类动物A,B,C，

题目链接：http://codeforces.com/problemset/problem/616/C点击打开链接 C. The Labyrinth time limit per test 1 second memory limit per test 256 megabytes input standard input output sta

题目链接：http://codeforces.com/problemset/problem/698/B点击打开链接 B. Fix a Tree time limit per test 2 seconds memory limit per test 256 megabytes input standard input

题目链接http://codeforces.com/problemset/problem/357/C点击打开链接 C. Knight Tournament time limit per test 3 seconds memory limit per test 256 megabytes input standard input

题目链接：http://codeforces.com/problemset/problem/505/B点击打开链接 B. Mr. Kitayuta's Colorful Graph time limit per test 1 second memory limit per test 256 megabytes input stand

题目链接：http://acm.hdu.edu.cn/showproblem.php?pid=1213点击打开链接 How Many Tables Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 31871    A

题目链接：http://poj.org/problem?id=1611点击打开链接 The Suspects Time Limit: 1000MS   Memory Limit: 20000K Total Submissions: 39369   Accepted: 19056 Description Sever

题目链接：http://poj.org/problem?id=2236点击打开链接 Wireless Network Time Limit: 10000MS   Memory Limit: 65536K Total Submissions: 28880   Accepted: 11966 Description An

题目链接：http://codeforces.com/problemset/problem/566/D点击打开链接 D. Restructuring Company time limit per test 2 seconds memory limit per test 256 megabytes input standard input

题目链接：http://codeforces.com/problemset/problem/371/D点击打开链接 D. Vessels time limit per test 2 seconds memory limit per test 256 megabytes input standard input ou

题目链接：http://acm.hdu.edu.cn/showproblem.php?pid=1232点击打开链接 畅通工程 Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 54973    Accepted Sub

题目链接：http://poj.org/problem?id=2524点击打开链接 Ubiquitous Religions Time Limit: 5000MS   Memory Limit: 65536K Total Submissions: 35899   Accepted: 17126 Description

题目链接：http://codeforces.com/problemset/problem/742/D点击打开链接 D. Arpa's weak amphitheater and Mehrdad's valuable Hoses time limit per test 1 second memory limit per test 256 megabytes