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LeetCode - Unique Paths
A robot is located at the top-left corner of a m x n grid (marked 'Start' in the diagram below). The robot can only move either down or right at any p ...
分类:其他好文   时间:2018-12-02 01:22:49    阅读次数:221
how to adjust PKG_CONFIG_PATH environment-variable
PKG_CONFIG_PATH is a environment variable that specifies additional paths in which pkg-config will search for its .pc files. This variable is used to ...
分类:其他好文   时间:2018-12-01 17:07:29    阅读次数:214
LeetCode 63. Unique Paths II
Follow up for “Unique Paths”: Now consider if some obstacles are added to the grids. How many unique paths would there be? An obstacle and empty space ...
分类:其他好文   时间:2018-11-29 22:29:48    阅读次数:199
Codeforces.741D.Arpa’s letter-marked tree and Mehrdad’s Dokhtar-kosh paths(dsu on tree 思路)
给定一棵树,每条边上有一个字符(a~v)。对每个节点,求它的子树中一条最长的路径,满足 路径上所有边上的字符可以重新排列成一个回文串。输出其最长长度。 $n\leq 5\times10^5$。 ...
分类:其他好文   时间:2018-11-25 21:15:59    阅读次数:234
dsu on tree(无讲解)
CF741D. Arpa’s letter marked tree and Mehrdad’s Dokhtar kosh paths 分析: 最多有一个字符出现奇数次 维护某个状态下深度的最大值,注意是全局深度 写成非递归形式方便理解 代码: cpp include include include ...
分类:其他好文   时间:2018-11-25 14:29:42    阅读次数:221
POJ3068 "Shortest" pair of paths
"嘟嘟嘟" 题目大意:一个有向图,每一条边有一个边权,求从节点$0$到$n 1$的两条不经过同一条边的路径,并且边权和最小。 费用流板子题。 发个博客证明一下我写了这题。 c++ include include include include include include include incl ...
分类:其他好文   时间:2018-11-24 14:26:48    阅读次数:209
MAC 设置环境变量PATH 和 查看PATH
理论篇 Mac系统的环境变量,加载顺序为: /etc/profile /etc/paths ~/.bash_profile ~/.bash_login ~/.profile ~/.bashrc /etc/profile和/etc/paths是系统级别的,系统启动就会加载,后面几个是当前用户级的环境变 ...
分类:系统相关   时间:2018-11-19 11:01:39    阅读次数:231
Intent 常用场景 FileProvider 拍照 裁剪
常用的 Intent 场景 拍照、选择照片、裁剪照片 涉及到的权限 需要配置 FileProvider 在清单文件中声明FileProvider: 在res/xml/下添加file_paths.xml配置文件 --> Activity public class MainActivity exten.... ...
分类:其他好文   时间:2018-11-17 21:29:48    阅读次数:207
R语言 重命名目录下所有文件
myfilepath <- "F:/paper2/climateExposure/wjj_mec/second/paths/"setwd(myfilepath)alltypefiles = dir(myfilepath)newname = gsub(pattern = 'paths.',replac ...
分类:编程语言   时间:2018-11-17 17:53:37    阅读次数:424
leetcode62—Unique Paths
A robot is located at the top-left corner of a m x n grid (marked 'Start' in the diagram below).The robot can only move either down or right at any po... ...
分类:其他好文   时间:2018-11-17 16:17:05    阅读次数:173
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