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  A. Beautiful Matrix Problem: You've got a 5 × 5 matrix, consisting of 24 zeroes and a single number one. Let's index the matrix rows by numbers from 1 to 5 from top to bottom, let's index the matrix columns by numbers from 1 to 5 from left to right. In one move, you are allowed to apply one of the two following transformations to the matrix:   1. Swap two neighboring matrix rows, that is, rows with indexes i and i + 1 for some integer i (1 ≤ i < 5).  2. Swap two neighboring matrix columns, that is, columns with indexes j and j + 1 for some integer j (1 ≤ j < 5).  You think that a matrix looks beautiful, if the single number one of the matrix is located in its middle (in the cell that is on the intersection of the third row and the third column). Count the minimum number of moves needed to make the matrix beautiful. Input  The input consists of five lines, each line contains five integers: the j-th integer in the i-th line of the input represents th...

  A. Young Physicist Problem: A guy named Vasya attends the final grade of a high school. One day Vasya decided to watch a match of his favorite hockey team. And, as the boy loves hockey very much, even more than physics, he forgot to do the homework. Specifically, he forgot to complete his physics tasks. Next day the teacher got very angry at Vasya and decided to teach him a lesson. He gave the lazy student a seemingly easy task: You are given an idle body in space and the forces that affect it. The body can be considered as a material point with coordinates (0; 0; 0). Vasya had only to answer whether it is in equilibrium. "Piece of cake" — thought Vasya, we need only to check if the sum of all vectors is equal to 0. So, Vasya began to solve the problem. But later it turned out that there can be lots and lots of these forces, and Vasya can not cope without your help. Help him. Write a program that determines whether a body is idle or is moving by the given vectors of forces....

Production principle Speaking of the essence of Bitcoin, the essence of Bitcoin is actually a special solution generated by a series of complex algorithms.  A special solution refers to a set of finite solutions that can be obtained from a system of equations. Each specific solution can solve the equation and is unique.  Using the analogy of banknotes, Bitcoin is the serial number of a banknote. If you know the serial number on a banknote, you will own the banknote.  The process of mining is to continuously search for special solutions of the equations through a large number of calculations.  The equation system is only designed with 21 million special solutions, so the upper limit of Bitcoin is 21 million.   Currency characteristics Decentralization: Bitcoin is the first distributed virtual currency. The entire network is composed of users and there is no central bank. Decentralization is the guarantee of Bitcoin's security and freedom. Circulation around the w...

  In early February of this year, the official website of Microstrategy released data showing that Microstrategy has officially purchased 10 million US dollars of Bitcoin again. MicroStrategy CEO Michael Saylor also tweeted that MicroStrategy purchased approximately 295 bitcoins for US$10 million in cash, with an average price of US$33,808 per bitcoin. MicroStrategy has now acquired 71,079 bitcoins for $1.145 billion, with an average price of $16,109 per bitcoin. As Tesla allows Bitcoin as a payment ‘currency’, its value may be increased. The total number of bitcoins in the world is 21 million. As of July 13, 2020, 15.85 million have been mined. If long-term holders increase, or companies like Tesla continue to join, it is very likely that the price of Bitcoin will reach $400,000 in the future. The current price is 55,000 US dollars. On March 12, 2020, the price of Bitcoin was only $3,800. The one-year increase reached 1347.368%.   If this year is calculated based on last yea...

  Tesla US official website supports bitcoin payments, and bitcoin has risen by $1,000 in the short-term. Tesla also stated that Bitcoin is the only cryptocurrency that Tesla accepts, and currently only supports Bitcoin payments for customers in the continental United States, and that it will consider expanding to other markets in the future. The Indian market will be the next market that supports Bitcoin payments. In January 2021, Tesla has purchased $1.5 billion worth of Bitcoin. At the same time, Tesla hopes to use Bitcoin as a payment method and use digital currency for pricing and sales of its products.   Follow: Anjan Diyora

How are these large MNC's remaining on top? In this article, I'll share with you what methodologies the enormous companies are utilizing to remain on top and breaking point rivalry on the lookout. Contemplating the Future Companies, for example, Facebook, Google, Expedia, and Amazon are continually considering what's to come.  They investigate what they did previously and where the latest things are going.  Facebook's new Newsfeed calculations will make a more amiable and drawing-in experience for its clients. Facebook listened when users said they would not like to see immaterial and posts they don't esteem any longer. Accordingly, Facebook clients will see more things that they like and promotions will be less misleading content.  Another model is Amazon's new online media stage called Spark. They saw how its clients invest their energy in other online media stages and needed to impersonate it.  Flash is a combination of Pinterest and Instagram...

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