Last week, Hamed learned about a new type of equations in his math class called Modular Equations. Lets define i modulo j as the remainder of division of i by j and denote it by . A Modular Equation, as Hamed's teacher described, is an equation of th…
题目链接:http://codeforces.com/problemset/problem/495/B 题目意思:给出两个非负整数a,b,求出符合这个等式 的所有x,并输出 x 的数量,如果 x 有无限多个,那么输出 infinity. 想了半个多小时......有个地方想遗漏了. a mod x == b,等价于 a = k*x + b.设 mul = a - b,那么 k*x = mul,然后就不断枚举 mul 的因子,即 kx = mul.由于 mod 出来的结果为 b,那么…
原文地址:http://colah.github.io/posts/2014-07-Conv-Nets-Modular/ Conv Nets: A Modular Perspective Posted on July 8, 2014 neural networks, deep learning, convolutional neural networks, modular neural networks Introduction In the last few years, deep neura…
Special equations Time Limit:1000MS Memory Limit:32768KB 64bit IO Format:%I64d & %I64u Submit Status Practice HDU 4569 Description Let f(x) = a nx n +...+ a 1x +a 0, in which a i (0 <= i <= n) are all known integers. We call f(x) 0 (mod…
“矩阵代数初步”(Introduction to MATRIX ALGEBRA)课程由Prof. A.K.Kaw(University of South Florida)设计并讲授. PDF格式学习笔记下载(Academia.edu) 第5章课程讲义下载(PDF) Summary Consistent and inconsistent system A system of equations $$[A][X]=[B]$$ where $[A]$ is called the coefficient…
1.Introduction 2.First-order Differential Equations Exercise2.1. Find solutons of the following intial-value problems in $\bbR^2$: (1)$2u_y-u_x+xu=0$ with $u(x,0)=2xe^{x^2/2}$; (2)$u_y+(1+x^2)u_x-u=0$ with $u(x,0)=\arctan x$. Solution: (1)Since $(-1,…
Description The modular modular multiplicative inverse of an integer a modulo m is an integer x such that a-1≡x (mod m). This is equivalent toax≡1 (mod m). Input There are multiple test cases. The first line of input is an integer T ≍ 2000 indicating…
Introduce The article shows a way to use math equations to represent code's logical. Key ideas logical first Get readers to see the logical first, so prefer to keep a 'where' section to describe variables separately. Pure function conception I am thi…
All the two important problems that the EM theory trys to describe and explain are propogation and radiation of EM wave, on the basic of Maxwell Equations. So we have to talk about the Maxwell Equations firstly ,the greatest achievement in my opinio…
