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传送门：http://codeforces.com/contest/1092/problem/F F. Tree with Maximum Cost time limit per test 2 seconds memory limit per test 256 megabytes input sta 阅读全文
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传送门：http://codeforces.com/contest/1092/problem/D2 D2. Great Vova Wall (Version 2) time limit per test 2 seconds memory limit per test 256 megabytes in 阅读全文
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传送门：http://codeforces.com/contest/1092/problem/D1 D1. Great Vova Wall (Version 1) time limit per test 2 seconds memory limit per test 256 megabytes in 阅读全文
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传送门：http://codeforces.com/contest/1087/problem/C C. Connect Three time limit per test 1 second memory limit per test 256 megabytes input standard inpu 阅读全文