随笔分类 - 思维数学
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摘要：Since Sonya has just learned the basics of matrices, she decided to play with them a little bit. Sonya imagined a new type of matrices that she called
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摘要：You are given a sequence a1, a2, ..., an of one-dimensional segments numbered 1 through n. Your task is to find two distinct indices i and j such that
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摘要：You might have heard about the next game in Lara Croft series coming out this year. You also might have watched its trailer. Though you definitely mis
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摘要：街上有n棵树，标号为1...n，第i棵树的高度为ai。 定义这n棵树是漂亮的，当且仅当 1. 对于所有的i，ai=an-i+1； 2. 对于1 <= i < n / 2 (不是整除)，ai + 1= ai + 1； 比如说 “2 3 4 5 5 4 3 2”和“1 2 3 2 1”是漂亮的而“1 3
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摘要：Fibonacci数是非常有名的一个数列,它的公式为 f(n)=f(n-1)+f(n-2),f(0)=1,f(1)=2。 我们可以把任意一个数x表示成若干不相同的Fibonacci数的和， 比如说14 = 13+1 = 8+5+1 = 8+3+2+1。 如果把Fibonacci数列作为数的位权，即f
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摘要：将1，2，...，9共9个数排成下列形态的三角形。 a b c d e f g h i 其中：a～i分别表示1，2，...，9中的一个数字，并要求同时满足下列条件： （1）a<f<i; （2）b<d, g<h, c<e （3）a+b+d+f=f+g+h+i=i+e+c+a=P 程序要求：根据输入的边
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摘要：C. Mahmoud and Ehab and the xor Mahmoud and Ehab are on the third stage of their adventures now. As you know, Dr. Evil likes sets. This time he won't
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摘要：CS Course Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 338 Accepted Submission(s): 167 Problem
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摘要：A. Sorting by Subsequences You are given a sequence a1, a2, ..., an consisting of different integers. It is required to split this sequence into the m
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摘要：https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=2041 小背包放到大背包里，则对数最多一定与某个质量数量最多的保持一致
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摘要：B. Frodo and pillows time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output n hobbits are planni
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摘要：D - Decrease (Contestant ver.) Time limit : 2sec / Memory limit : 256MB Score : 600 points Problem Statement We have a sequence of length N consisting
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摘要：Time Limit：2s Memory Limit：128MByte Submissions：1599Solved：270 Time Limit：2s Memory Limit：128MByte Submissions：1599Solved：270 DESCRIPTION You have a s
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摘要：B. Mashmokh and Tokens time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Bimokh is Mashmokh
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摘要：B. New Job time limit per test 1 second memory limit per test 64 megabytes input standard input output standard output B. New Job time limit per test
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摘要：因为坐标都在1-10之间，因此可暴力求解
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摘要：B. Black Square time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Polycarp has a checkered
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摘要：http://agc017.contest.atcoder.jp/tasks/agc017_b B - Moderate Differences Time limit : 2sec / Memory limit : 256MB Score : 400 points Problem Statement
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摘要：A. Saitama Destroys Hotel time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Saitama acciden
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摘要：Genos needs your help. He was asked to solve the following programming problem by Saitama: The length of some string s is denoted |s|. The Hamming dis
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