Fish farming is a science. With the popularization of the idea of scientific fish farming, people pay more and more attention to fish tank ecosystem, biochemical filtration, biological filter material, nitrifying bacteria, and so on, they are trying to create a comfortable living environment for the fishes, so that they can show us the most beautiful side. But in the forum for a long time, found a lot of fish friends on the understanding of the existe
◇ Xin yusi (www.xys.org) (xys7.dxiong.com) (xys.ebookdiy.com) (xys2.dropin.org) ◇ a mouth of bacteria · Fang zhouzi · accidentally saw a toothpaste factory in China selling "Chinese medicine antibacterial toothpaste" advertisement, it is said that it can effectively remove 99% of harmful oral bacteria, and its "antibacterial maintenance toothbrush" advertisement, claims that "the industry's first antibacter
2. Spherical equations and spherical coordinates
ISpherical Equation
1Definition: In the space Cartesian coordinate system, equation (X-a) ² + (Y-B) ² + (Z-C) ² = R (R is a real number)
The representation of the image is called a (generalized) sphere, where (a, B, c) is called its center.
It is called its radius.
It is not hard to see that the generalized sphere includes a common sphere, one point
Count Bacteria
Time limit:1000 ms
Memory limit:65536 kbspecial Judge64-bit integer Io format: % LLD Java class name: mainprev submit status Statistics discuss nextfont size:
+
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James discovered a bacteria that will be re-split into three bacteria on the first day after the split, that is, if one newly split bacteria e
A. Raising bacteriaYou are a lover of bacteria. You want to raise some bacteria in a box.Initially, the box is empty. Each morning, you can put any number of bacteria into the box. And each night, every bacterium in the box would split into the bacteria. You hope to see exactly x
Bacteria (disease)Time limit: 1 Sec memory limit: up to MBSubmissions: 9 resolution: 5Submitted State [Discussion Version]Title DescriptionRecently, D (1≤d≤15) species of bacteria have appeared on the farm. John will choose as much milk as possible from his N (1≤n≤1000) head cows, but if the selected cows carry more than K (1≤k≤d) of different bacteria, the milk
This summer, China's provincial temperature soared, with the Zhejiang Xinchang 43 ℃ record highs, although into the autumn, but dog days and dormant autumn Tiger still let the vast number of netizens have said: Home is more reliable, home air conditioning "bless", is comfortable and comfortable. But do you know that the use of air conditioning is also a safety hazard, such as irregular cleaning, it is easy to be in the air conditioning bacteria infect
Qwerty the Ranger took up a government job and arrived on planet Mars. He should stay in the secret labs and conduct some experiments on bacteria that has funny and abnormal properties. The job isn ' t difficult, but the salary are high.At the beginning of the first experiment there are a single bacterium in the test tube. Every second each bacterium in the test tube divides itself intok bacteria. After tha
C. About bacteriatime limit per test
2 secondsMemory limit per test
256 megabytesInput
Standard InputOutput
Standard output
Qwerty the ranger took up a government job and arrived on planet Mars. he shoshould stay in the secret lab and conducting CT some experiments on bacteria that have funny and abnormal properties. the job isn' t difficult, but the salary is high.
At the beginning of the first experiment there is a single bacterium in the test tube.
Title Link: http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemId=4682As everybody knows, the sum of the interior angles of a triangle on a plane are always the degree. But that's not true when the triangle are on spherical surface. Given a triangle on a spherical surface, which is asked to calculate the sum of the interior angles of the triangle.Formally, given the 3 vertex of the triangle. They is co
Watching a video yesterday (Http://www.tudou.com/programs/view/4QmfLMMBZBg) is about a strong network built by the slime bacteria looking for food.
The following figure
Through the observation of the behavior of sticky bacteria. I would like to use a distributed swarm algorithm to simulate the behavior of slime to achieve the optimal path of search.
At present, simple behavior simulation is realized.
Calculation of the spherical distance between two points on the Spherical Surface
In fact, this is a very simple problem. The reason why I proposed it and made a solution today is that when I discussed the project yesterday, it is difficult for lead to calculate the distance between two points on the Earth's sphere. It is actually a very simple Three-dimensional Geometric calculation. On the other hand, e
A-raising bacteriaTime limit:1000MS Memory Limit:262144KB 64bit IO Format:%i64d %i6 4u SubmitStatusDescriptionYou are a lover of bacteria. You want to raise some bacteria in a box.Initially, the box is empty. Each morning, you can put any number of bacteria into the box. And each night, every bacterium in the box would split into the
Feed raw material price rises, labor cost increases, hog raising cost further is pulled high, the breed enters the high cost time, in the industry already is indisputable fact. How to reduce the cost of feeding has become the industry's most concerned topic. Farmers can only improve feed utilization rate and reduce feed waste in case the feed price cannot be left or right. The use of fermented feed is one of the effective methods to improve feed utilization.Hope that red functional bio-fermented
food, easy to burn mouth.
When people eat, several or more pairs of chopsticks are often caught on the same plate. In fact, it is easy to mix chopsticks with various bacteria. Studies have found that many bacteria are infected with chopsticks. According to tests, a pair of unclean chopsticks may contain tens of thousands or even hundreds of thousands of bacteria
metal chopsticks are too heavy, feel bad, and strong thermal conductivity, eating overheating food, easy to scald the mouth.
People often eat a few pairs or more than 10 pairs of chopsticks together to a plate to clip vegetables. In fact, chopsticks mixed with, it is easy to contaminate a variety of bacteria. Studies have found that many of the germs are transmitted by chopsticks. According to tests, a pair of unclean chopsticks may carry tens of t
After searching some data, it is found that the theoretical support has cellular automata, in which the diffusion-limited condensation model in fractal theory is more appropriate to the network of slime bacteria.
Adjusted over and over again. Now buy a network of slime bacteria. As shown in figure:
The first diagram is a simulation process
The second figure is the enlargement of the final graph
There a
Keep your teeth clean, your mouth healthy, and your toothbrush is a must. However, how to choose a good toothbrush? In this issue, I would like to share with you my choice of toothbrush standards.The brush head is short and narrow. Short and narrow brush head can be flexible in the mouth to rotate, can reach all parts of the tooth (especially the molar near the side of the cheek), not easy to leave a dead corner. The American Dental Association recommends that adult toothbrushes should be: Brush
Sensitive bacteria
Bird flu, foot-and-mouth disease, no. 5 disease, and SARS. These well-known viruses now seem to attack the earth from time to time. No, this time, the virus is making a huge effort, the lovely passer-by did not survive the attack, and the passer-by did not know how to do so. He tried the prescriptions of major antivirus manufacturers, so far. Let's first look at the condition of passer-by:
1. if you cannot see mm qq onli
The use of spherical harmonics in graphics is growing. It only needs to calculate a small amount of coefficients and does not need to process a large amount of data during runtime. Spherical harmonical can be used to simulate rtgi. I. Spherical Harmonic Functions
Spherical Harmonics SH is a set of functions defined in
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