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题目链接：https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=4763 题意：给你一个区间L，R；求区间所有数的并，和或的答案； 思路：两个数的二进制长度不一样 阅读全文
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C. Socks time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output C. Socks time limit per test 2 阅读全文
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C. Sanatorium time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Vasiliy spent his vacation 阅读全文
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D. Exams time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output D. Exams time limit per test 1 s 阅读全文
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E. Lucky Array time limit per test 4 seconds memory limit per test 256 megabytes input standard input output standard output Petya loves lucky numbers 阅读全文