2k eleague

The test method uses both Mina and Netty to implement a echoserver based on NIO, testing the performance of different sizes of network messages Test environment Client-server: Model Name:intel (R) Core (TM) i5-2320 CPU @ 3.00GHz cache size:6144 KB CPU cores: 4 jdk:1.6.0_30-b12 NETWORK:1000MB Memory:-xms256m-xmx256m Linux:centos 5 .7, Kernel 2.6.18-274.el5 Test tools: JMeter v2.4 Version: Mina 2.0.7 netty 3.6.2.Final Configuration: Mina Io-processor CPU Core Executor CPU kernel number b

in a chessboard of 2kx2k squares, a square is different from other squares, calling it a special square and calling it a special chessboard. problem: Use 4 different forms of L-shaped dominoes to cover all squares except special squares on a given special chessboard, and any 2 must not overlap. There are 4k cases where special squares appear on the board. Thus, for any k>=0, there are 4k different special chessboard. It is easy to know that in any 2k

cht=qr：必要参数，固定值 chs=width>xheight> : necessary parameters, generate two-dimensional code size, units are pixels, the current generated QR code is square, so the two width and height values are set to the same value chl=data> : The necessary parameters, the generation of two-dimensional code contains information, can be numbers, characters, binary information, Chinese characters. Data types cannot be mixed and data must be UTF-8 url-encoded. If you need to pass more than

Miss% qr|qw Ar|aw Netin netout C Onn time*0 *0 *0 *0 0 1|0 0 18g 18.3g 16.1g 0 ycsb:0.0% 0 0|0 0|0 62b 2k 1 13:04:01*0 *0 *0 *0 0 1|0 0 18g 18.3g 16.1g 0 ycsb:0.0% 0 0|0 0|0 62b 2k 1 13:04:02*0 *0 *0 *0 0 1|0 0 18g 18.3g 16.1g 0 ycsb:0.0% 0 0|0 0|0 62b 2k 1 13:04:03 MongoDB 3.0 Rc8 Version $/home/mongodb/mongodb-linux-x86_64-3.0.0-rc8/bin/mongostat–por

Topic Portal　　Title DescriptionYou are backing up computer data from a large office or office building (offices) in an IT company. However, the work of data backup is tedious, so you want to design a system that allows different offices to back up each other, while you sit at home and enjoy computer games.The buildings are known to be located on the same street. You decide to pair these office buildings (two groups). Each pair of office buildings can be backed up by laying a network cable betwee

struct body Mytcp_prot that represents the TCP protocol also has several members associated with the buffer.Mysysctl_tcp_mem is an array that is pointed to by the member Sysctl_mem of the Mytcp_prot, the array has three elements, and mysysctl_tcp_mem[0] represents the minimum limit for the total available size of the buffer, The current total allocated buffer size is below this value, then there is no problem and the allocation is successful. Mysysctl_tcp_mem[2] represents the highest hard limi

size is 4G, record block from 2k to 8m, and output test data to Excel file [[emailprotected]] #/opt/iozone/bin/iozone-a-S 4g-i 0-i 1-f/tmp/testfile-y 2k-q 8m-rb output.xls iozone:performance Test of Fil e I/O Version $Revision: 3.408 $ Compiled for the + bit mode. Build:linux Contributors:william Norcott, Don Capps, Isom Crawford, Kirby Collins Al Slater, Scott Rh INE, Mike Wisner, Ken Goss Steve l

MS Memory Limit:262144KB 64bit IO Format:%i64d %i64uSubmit Status Practice Codeforces 546ADescriptionA soldier wants to buy W bananas in the shop. He has to pay K dollars for the first banana, 2k dollars for the second one and so on (in other words, h e have to pay I• k dollars for the i-th banana).He has n dollars. How many dollars does he has to borrow from his friend soldier to buy w bananas?InputThe first line contains three positive integers k, n

\[\begin{eqnarray*}\sum_{i=0}^{n-1}\left (ki+b-a_i\right) ^2\\=\sum_{i=0}^{n-1}\left (k^2i^2+b^2+a_i^2+2kbi-2kia_i-2ba_i\right) \ \=k^2\sum_{i=0}^{n-1}i^2+nb^2+\sum_{i=0}^{n-1}a_i^2+2kb\sum_{i=0}^{n-1}i-2k\sum_{i=0}^{n-1}ia_i-2b\ Sum_{i=0}^{n-1}a_i\\\end{eqnarray*}\]Set\[\begin{eqnarray*}a=\sum_{i=0}^{n-1}i^2\\B=\sum_{i=0}^{n-1}i\\C=\sum_{i=0}^{n-1}ia_i\\D=\sum_{i=0}^{n-1}a_i\\\end{eqnarray*}\]You only need to minimize\[\begin{eqnarray*}ak^2+nb^2+2kbb

Multi-school questions, put the math problem, but did not want to come out, stupid explosion, before the half-day s[i][j] and, in fact, is a product. In fact, when the game I even log (S[i][j]) +1 is s[i][j] The number of bits have not seen, said to be ashamed.After knowing this, we enumerate the binary number of each bit, because the elements are non-negative, so the sum of the array is non-descending, here used to the ruler, before also heard, should have done it, do not remember.Because [

it is compatible with Windows 2K/XP, then start the computer, if the blue screen still appears, use "Last Known Good Configuration" to start Windows, if this still fails, Repair installation or reload is recommended.15, 0x0000006f:session3_initialization-failedError Analysis: This error usually occurs when Windows starts, typically caused by faulty drivers or corrupted system files.◇ Solution: It is recommended that the system be repaired and install

In programming land, there is several pathways called philosopher ' s walks for philosophers to has a rest. A philosopher ' s Walk is a pathway in a square-shaped region with plenty of woods. The woods is helpful for philosophers and think, but they planted so densely as a maze that they lost their ways in the Maze of Woods of a philosopher ' s Walk.Fortunately, the structures of all philosopher ' s walks is similar; The structure of a philosopher ' s Walk is designed and constructed according t