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Let's say string ss has period kk if si=si+ksi=si+k for all ii from 11 to |s|−k|s|−k (|s||s| means length of string ss) and kk is the minimum positive 阅读全文
posted @ 2020-04-27 11:16
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Kefa decided to celebrate his first big salary by going to the restaurant. He lives by an unusual park. The park is a rooted tree consisting of n vert 阅读全文
posted @ 2020-04-26 10:02
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Kate has a set SS of nn integers {1,…,n}{1,…,n}. She thinks that imperfection of a subset M⊆SM⊆S is equal to the maximum of gcd(a,b)gcd(a,b) over all 阅读全文
posted @ 2020-04-25 09:58
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Eugene likes working with arrays. And today he needs your help in solving one challenging task. An array cc is a subarray of an array bb if cc can be 阅读全文
posted @ 2020-04-24 16:06
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Once again, Boris needs the help of Anton in creating a task. This time Anton needs to solve the following problem: There are two arrays of integers a 阅读全文
posted @ 2020-04-24 09:00
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We guessed a permutation pp consisting of nn integers. The permutation of length nn is the array of length nn where each element from 11 to nn appears 阅读全文
posted @ 2020-04-23 18:48
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Recall that the sequence bb is a a subsequence of the sequence aa if bb can be derived from aa by removing zero or more elements without changing the 阅读全文
posted @ 2020-04-23 17:20
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其实大家平常常会用的主要有三个：cout、cerr、clog，首先简单介绍下三者。 这三者在C++中都是标准IO库中提供的输出工具（至于有关的重载问题在此不讨论）： cout：写到标准输出的ostream对象； cerr：输出到标准错误的ostream对象，常用于程序错误信息； clog：也是输出标 阅读全文
posted @ 2020-04-23 01:36
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(没错，就是跟上一篇叫拍的。。。 1、强烈的事业心将来，他也一定会有自己热爱的事业。而且，男人最性感的时刻之一，就是他专心致志做事的时候。所以，找一个机会在他全神贯注玩ACM的时候，从侧面好好观察他，你就会发现我说的话没错。 2、永不放弃的精神在比赛刚开始，神牛队就飘崎岖。玩ACM的男生不会退缩，而 阅读全文
posted @ 2020-04-23 01:15
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劳资六年前开始搞ACM啊！！！！！！！！！！从此踏上了尼玛不归路啊！！！！！！！！！！！！谁特么跟劳资讲算法是程序设计的核心啊！！！！！！尼玛除了面试题就没见过用算法的地方啊！！！！！！谁再跟劳资讲算法之美算法的力量，劳资一本算法导论拍死你啊！！！！！！！！那是搞ACM的入门书啊！！！！特么的入门书 阅读全文
posted @ 2020-04-23 01:13
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