Dreamoon and MRT 题目链接: http://codeforces.com/group/gRkn7bDfsN/contest/212299/problem/B 只需要考虑相对位置,设a0位置为0枚举由于对称性,可以设第一步向右,这样总时间减少一半递归的话省去了cnt部分,直接从O(N2^N-1)变成了O(2^N-1)可以分析一下几个代码的优化过程 #include <bits/stdc++.h> using namespace std; ], b[], c, cnt, ans =…

题目 数轴上有M个点a1.a2....am,另有一个数列p1.p2....pn,(1 ≤ pii ≤ M). 给定d1.d2....dn,对所有的 i (1 ≤ i ≤ n),已知 |api+1 - api| = di,求M得最少可能值.(1 ≤ n ≤ 25 ,1 ≤ ai ≤ 105) 原题链接:http://codeforces.com/group/gRkn7bDfsN/contest/212299/problem/B 思路 基本思路:枚举 api+1 在 api 的左边或右边,为了降低复…

最近在处理遥感影像的时候遇见了MODIS影像数据,从中MOD13中提取NDVI是相当的重要.在一番的百度之中找到了处理modis影像的神器------MRT 接下来我来说明一下MRT的具体安装,如果之前没有接触过这个软件的话学学是相当的必要的. 第一步:就是MRT的下载,网络上很多,大多数能用.我使用的的是:http://pc6.com//softview/SoftView_96098.html. 第二步:进行解压,MRT使用的前提是必须有Java的jre包,如果之前开发过Android或者安装…

题目链接: B. Dreamoon and Sets time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Dreamoon likes to play with sets, integers and .  is defined as the largest positive integer that divides both a a…

题目链接: A. Dreamoon and Sums time limit per test 1.5 seconds memory limit per test 256 megabytes input standard input output standard output Dreamoon loves summing up something for no reason. One day he obtains two integers a and b occasionally. He wan…

http://http.download.nvidia.com/developer/SDK/Individual_Samples/DEMOS/Direct3D9/DeferredShading.zip HDR Deferred Shading This sample shows high dynamic range (HDR) lighting combined with deferred shading. Deferred shading is a technique where the co…

C. Dreamoon and Sums time limit per test 1.5 seconds memory limit per test 256 megabytes input standard input output standard output Dreamoon loves summing up something for no reason. One day he obtains two integers a and b occasionally. He wants to…

B. Dreamoon and Sets time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Dreamoon likes to play with sets, integers and . is defined as the largest positive integer that divides both a and b. L…

A. Dreamoon and Sums time limit per test 1.5 seconds memory limit per test 256 megabytes input standard input output standard output Dreamoon loves summing up something for no reason. One day he obtains two integers a and b occasionally. He wants to…

C. Dreamoon and Strings time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Dreamoon has a string s and a pattern string p. He first removes exactly x characters from s obtaining string s' as a…