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题目链接: "http://acm.csu.edu.cn/OnlineJudge/problem.php?id=1808" 1808: 地铁 Time Limit: 5 SecMemory Limit: 128 MB 问题描述 Bobo 居住在大城市 ICPCCamp。 ICPCCamp 有 n 个 阅读全文
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题目链接: "https://icpcarchive.ecs.baylor.edu/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=4924" Prime Switch Time limit: 1.000 sec 阅读全文
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题目链接: "http://www.codeforces.com/contest/9/problem/D" D. How many trees? time limit per test1 secondmemory limit per test64 megabytes 问题描述 In one very 阅读全文