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Problem Description Holedox is a small animal which can be considered as one point. It lives in a straight pipe whose length is L. Holedox can only mo 阅读全文
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Problem Description Clairewd is a member of FBI. After several years concealing in BUPT, she intercepted some important messages and she was preparing 阅读全文
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When playing DotA with god-like rivals and pig-like team members, you have to face an embarrassing situation: All your teammates are killed, and you h 阅读全文
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Problem Description Harry Potter has some precious. For example, his invisible robe, his wand and his owl. When Hogwarts school is in holiday, Harry P 阅读全文
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time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output time limit per test 2 seconds time limit 阅读全文
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You are given a sequence of n integers a1, a2, ..., an. Determine a real number x such that the weakness of the sequence a1 - x, a2 - x, ..., an - x i 阅读全文
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memory limit per test 512 megabytes input standard input output standard output memory limit per test 512 megabytes memory limit per test input standa 阅读全文
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The SUM problem can be formulated as follows: given four lists A, B, C, D of integer values, compute how many quadruplet (a, b, c, d ) ∈ A x B x C x D 阅读全文
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C. Hexadecimal's Numbers time limit per test 1 second memory limit per test 64 megabytes input standard input output standard output One beautiful Jul 阅读全文
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time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output time limit per test 1 second time limit p 阅读全文