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2016

poj 1350 Cabric Number Problem

·1 min
其他 算法竞赛
http://poj.org/problem?id=1350 题意：6174问题。。。一个四位数。。四个数字重排。。。最大的减去最小的得到新的数字。最后一定能得到6174或者0.除非这个四位数的四个数字都一样。写出变化的过程。

2015

在linux mint 上安装 Oracle JDK 的方法

·1 min
其他 Jdk
Open up the Terminal (Alt + F2 > Terminal). Remove OpenJDK installation. 1sudo apt-get update && apt-get remove openjdk* Download Oracle JDK from here. You are looking for a linux version with tar.gz extension. Also choose the right version from 32-bit (x86) and 64bit (x64) one.

codeforces 519 C. A and B and Team Training

·1 min
其他 算法竞赛
http://codeforces.com/problemset/problem/519/C 题意：两种组队方式，3人一组，1个大牛+2个蒟蒻或者1个蒟蒻+2个大牛。给定大牛和蒟蒻的个数。问最多能组多少队。 思路：线性规划。设两种队分别有x,y个即可。 突然发现这题以前做过。。。比当时的代码简单了一些。还不错。

test

·5 mins
其他 算法竞赛
应大家的要求，写一篇博客来介绍下vim在ACM中的简单使用。 写本文的目的，只是为了给广大acmer一个入门vim的指导。不喜勿喷！ 不想看到的请远离！

atom在linux下安装插件失败的解决方案

·1 min
其他 Atom Linux
1gyp info it worked if it ends with ok 2gyp info using node-gyp@2.0.2 3gyp info using node@0.10.40 | linux | x64 4gyp http GET https://atom.io/download/atom-shell/v0.34.0/node-v0.34.0.tar.gz 5gyp WARN install got an error, rolling back install 6gyp ERR! install error 7gyp ERR! stack Error: This is most likely not a problem with node-gyp or the package itself and 8gyp ERR! stack is related to network connectivity. In most cases you are behind a proxy or have bad 9gyp ERR! stack network settings. 10gyp ERR! stack at Request.<anonymous> (/opt/atom/resources/app/apm/node_modules/npm/node_modules/node-gyp/lib/install.js:234:21) 11gyp ERR! stack at Request.emit (events.js:95:17) 12gyp ERR! stack at Request.onRequestError (/opt/atom/resources/app/apm/node_modules/npm/node_modules/request/request.js:861:8) 13gyp ERR! stack at ClientRequest.emit (events.js:95:17) 14gyp ERR! stack at Socket.socketErrorListener (http.js:1548:9) 15gyp ERR! stack at Socket.emit (events.js:95:17) 16gyp ERR! stack at net.js:834:16 17gyp ERR! stack at process._tickCallback (node.js:448:13) 18gyp ERR! System Linux 3.16.0-38-generic 19gyp ERR! command "/opt/atom/resources/app/apm/bin/node" "/opt/atom/resources/app/apm/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js" "install" "--target=0.34.0" "--dist-url=https://atom.io/download/atom-shell" "--arch=x64" "--ensure" 20gyp ERR! cwd /home/rkz2013/.atom 21gyp ERR! node -v v0.10.40 22gyp ERR! node-gyp -v v2.0.2 23gyp ERR! not ok 解决办法是不用apm install 而是用npm install…之前要安装一个npm