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链接:https://ac.nowcoder.com/acm/contest/5671/B来源:牛客网 题目描述: Roundgod is obsessive about linear algebra. Let A={0,1}A=\{0,1\}A={0,1}, everyday she will g 阅读全文
posted @ 2020-07-27 21:46
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题目描述: 链接:https://ac.nowcoder.com/acm/contest/5671/K来源:牛客网A sequence is called kkk-bag, if and only if it is put in order by some (maybe one) permutati 阅读全文
posted @ 2020-07-27 20:32
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