随笔分类 - 模拟
摘要：A regular palindrome is a string of numbers or letters that is the same forward as backward. For example, the string "ABCDEDCBA" is a palindrome becau
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摘要：Eddy's interest is very extensive, recently he is interested in prime number. Eddy discover the all number owned can be divided into the multiply of p
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摘要：A boolean matrix has the parity property when each row and each column has an even sum, i.e. contains an even number of bits which are set. Here's a 4
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摘要：Hands that shed innocent blood! There are n guilty people in a line, the i th of them holds a claw with length Li. The bell rings and every person kil
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摘要：You are given a string s consisting of lowercase Latin letters. Character c is called k dominant iff each substring of s with length at least k contai
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摘要：题目描述 有一块n m的地，每块地要么长满杂草(用'W'表示)，要么是空地(用'G'表示)，现在有一个人站在(1,1)，面向(1,m),他可以按如下两种方式移动： 1、向面朝的方向移动一格，耗费1单位时间 2、向下移动一格，并反转面朝的方向(右变左，左变右)，耗费1单位时间 现在他想知道清除所有的杂
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摘要：Problem Description A permutation p1,p2,...,pn of 1,2,...,n is called a lucky permutation if and only if pi≡0(mod|pi−pi−2|) for i=3...n. Now you need
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摘要：Recently, Dima met with Sasha in a philatelic store, and since then they are collecting coins together. Their favorite occupation is to sort collectio
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摘要：There are some ambiguities when one writes Berland names with the letters of the Latin alphabet. For example, the Berland sound u can be written in th
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摘要：Polycarp has interviewed Oleg and has written the interview down without punctuation marks and spaces to save time. Thus, the interview is now a strin
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摘要：Exponential notation time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output You are given a pos
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