Mapreduce: Google's Human Cannon
The most authoritative introduction to mapreduce on the network is Jeffrey Dean.And Sanjay Ghemawat: mapreduce: Simpli ed data processing on large clustersYou can download it from labs.google.com.
For companies such as Goole who need to analyze and process massive data, ordinary programming methods are not enough. So Google developed mapreduce. In simple terms, syntax mapreduce is like lisp. Using the mapreduce m
features, and Redis is not competent in many of the scenarios where queries are made.At this time MongoDb stands out with its excellent and rich query capabilities.In addition MongoDb can store a lot more data than MySQL. MongoDB is suitable for those data structures that change frequently, and there is no connection between them, and this scenario is suitable for mongodb, such as multiple nested message replies.The article starts with the public number "Chen Shuyi" and focuses on the community
During the simulation competition, because the second question table had been playing for too long, there was only 40 minutes left. I wrote a point search without thinking about it... The monotonicity of this question is critical and will be explained below P.s. explanation in the code # Include [greedy] Xiao y's cannon [Cannon] problem solution
Hdu 5091 Beam Cannon (line segment tree scanning line), hdu5091
Link: hdu 5091 Beam Cannon
Given N vertices, we need to have a rectangle W ∗ H and ask how many vertices can be enclosed at most.
Solution: the scanning line of a line segment, assuming a bit (x, y), then (x, y )~ A rectangle (x + W, y + H) can be enclosed in the lower right corner of the frame (x, y)
Point, so N points are N rectangles. Find t
Question Surface
A positive integer array a with a length of M, indicating the Terrain Height from left to right. Test a cannon. The height of the shell is H parallel to that of the ground. If the height of a certain terrain is greater than or equal to the height of the shell flight H (AI> = H ), if the shell is blocked and falls at I-1, then Ai-1 + 1. If H For example, Terrain Height A = {1, 2, 0, 4, 3, 2, 1, 5, 7}, shell height B = {2, 8, 0, 7, 6, 5
title: http://www.51nod.com/onlineJudge/questionCode.html#!problemId=1287
Test Instructions:
An array of positive integers of length m that represents the height of the terrain from left to right. Test a cannon, the shells parallel to the ground from left to right to fly, height is h, if the height of a terrain is greater than the height of the projectile flying H (A[i] >= h), the shells will be blocked and fall in I-1 place, then a[i-1] + 1. If H F
I think we have developed the latest tools, which is very helpful for us.Because new tools have new features that simplify the patterns we develop.Standing on the shoulders of giants ~~~~~~~~~~~~~Cocoscreator, the largest of two featurescomponent ofData-drivenAfter using this tool, the biggest feeling is that it will be easier to develop, so it is recommendedStudents who do not have basic C + +, who want to develop their games quickly, can often use Cocos createrTalk less, let's have a good star
Review a bit of line tree, only to find the line tree or do too little, many forgetSegment tree has the following functions: RMQ, Interval sum query, single point update, interval updateForgot to delay the update when the interval was updated, here at the beginning WA.Say the idea of the problem:With each point as the lower-left corner of the rectangle, draw all the rectangles to the upper-right corner of the rectangle with any point in the area with the most overlap of the rectangle, which is t
The principle is not explained, and the code is directly used.
The annotated source program in the code can be used to print intermediate results and check whether the calculation is correct.
# Include "MPI. H "# include
Parallel Computing-Cannon algorithm (MPI implementation)
Label: style blog HTTP Io color ar OS for SP
Question: N, W, H (1
W * H is a range that can be shot.
Then, the coordinates x, y (-20000
Q: How many points can be shot at a time.
Very bare scanning line segment tree
Why didn't I write such questions at the scene ??????
1 #include Hdu5091
[Line Segment tree] hdu5091 beam cannon
Link: HDU 4499 cannon
Give an N * m board with K pieces on it, give the position of the piece, and then find out how many guns can be placed on the board, the guns placed later cannot attack each other.
Solution: the binary number is used to describe whether or not a piece can be put down before each release (whether it will conflict with an existing piece), and whether it will attack each other after it is put down, you only need to consider the le
In Ancient Costumes, we often hear a "precognition" Say to fortune tellers: You will meet your nobles at XX moment. This noble person will help you in your career.
Here is a question: What is genius? How can we find our talents.
A netizen came to
Create a turret Rotation
As we all know, the turret needs to launch shells from different angles around it. This requires us to set the turret as an object that will rotate. Next we will create a turret together.
Step 1: Add a rotation function to
According to Lucas ' theorem, we haveAns (n,k) =ans (⌊np⌋,⌊kp⌋−1) ∗∑i=0p−1 (N%PI) + (⌊n/p⌋⌊k/p⌋) ∑i=0k%p (n%pi) ans (n,k) =ans (\lfloor\frac n p \rfloor,\lfloor \ Frac k p\rfloor-1) *\sum_{i=0}^{p-1}\binom{n\%p}i+\binom{\lfloor N/p\rfloor}{\lfloor k/
Description
Byteman, one of the most deserving employee of the goldmine of byteland, is about to retire by the end of the year. the Goldmine management wocould like to reward him in acknowledgment of his conscientious work. as a reward byteman may
CLR profile resolves an issue with high memory consumptionBrother Cannon: "Hey, man, what busy, computer card into this force-like." "Brother Yong: "Using the CLR Profile tool to analyze the memory footprint of the flexiprint. "Brother Cannon: "Ouch, good ah, play advanced." ”Brother Yong: "also did not Ah, is to find the Click Query button query data, if the amount of data a large, memory rose several m, s
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