All DNA is composed of a series of nucleotides abbreviated as A, C, G, and T, for example: "ACGAATTCCG". When studying DNA, it is sometimes useful to ...
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其他好文 时间：
2018-06-05 00:42:34
阅读次数：
173
Problem description Petya loves lucky numbers. We all know that lucky numbers are the positive integers whose decimal representations contain only the ...
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其他好文 时间：
2018-06-04 23:24:30
阅读次数：
294
Problem description Valera loves his garden, where n fruit trees grow. This year he will enjoy a great harvest! On the i-th tree bi fruit grow, they w ...
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其他好文 时间：
2018-06-03 14:29:41
阅读次数：
175
You are given kk sequences of integers. The length of the ii-th sequence equals to nini. You have to choose exactly two sequences ii and jj (i≠ji≠j) s ...
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其他好文 时间：
2018-06-02 18:35:56
阅读次数：
154
Problem description Petya loves lucky numbers. Everybody knows that lucky numbers are positive integers whose decimal representation contains only the ...
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其他好文 时间：
2018-06-02 13:27:10
阅读次数：
218
Problem description Petya loves lucky numbers. Everybody knows that positive integers are lucky if their decimal representation doesn't contain digits ...
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其他好文 时间：
2018-06-01 20:41:17
阅读次数：
237
Problem description Petya loves football very much. One day, as he was watching a football match, he was writing the players' current positions on a p ...
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其他好文 时间：
2018-05-29 16:19:43
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193
Description Jamie loves sleeping. One day, he decides that he needs to wake up at exactly hh:?mm. However, he hates waking up, so he wants to make wak ...
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其他好文 时间：
2018-05-25 16:54:27
阅读次数：
224
Problem Statement Find the number of the possible tuples of sequences (A0,A1,…,AN) that satisfy all of the following conditions, modulo M: For every i ...
［抄题］： We have two integer sequences A and B of the same non-zero length. We are allowed to swap elements A[i] and B[i]. Note that both elements are in ...
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编程语言 时间：
2018-05-18 13:52:39
阅读次数：
623
