上一节我们了解了tal-vardy算法的大致原理,对所要研究的二元输入无记忆对称信道进行了介绍,并着重介绍了能够避免输出爆炸灾难的合并操作,这一节我们来关注信道弱化与强化操作. [1]<Channel polarization: A method for constructing capacity-achieving codes for symmetric binary-input memoryless channels>Erdal Arıkan [2]<How to Construct…
Corn Fields Time Limit: 2000MS Memory Limit: 65536K Total Submissions: 4739 Accepted: 2506 Description Farmer John has purchased a lush new rectangular pasture composed of M by N (1 ≤ M ≤ 12; 1 ≤ N ≤ 12) square parcels. He wants to grow some yumm…
SRM 513 2 1000CutTheNumbers Problem Statement Manao has a board filled with digits represented as String[] board. The j-th character of the i-th element of board represents the digit written in cell in row i, column j of the board. The rows are numbe…
weed-fs没有详细的帮助文档,为了方便阅读,特意把有用的参数帮助罗列出来.未列出的两个命令为version(版本查询) 及shell(这个命令在0.45版本只有回显功能)nerc@Ubuntu:~/data1$ weed -h WeedFS is a software to store billions of files and serve them fast! Usage: weed command [arguments] The commands are: compact run wee…