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28 Νοε 2022 · Modulo 10^9+7 (1000000007) Last Updated : 28 Nov, 2022. In most programming competitions, we are required to answer the result in 10^9+7 modulo. The reason behind this is, if problem constraints are large integers, only efficient algorithms can solve them in an allowed limited time. What is modulo operation:
- Modular Multiplicative Inverse
Give a positive integer n, find modular multiplicative...
- Modular Division
Give a positive integer n, find modular multiplicative...
- Modular Multiplicative Inverse
17 Μαΐ 2017 · 10^9+7 is a prime number. This means that the "Chinese remainder trick" doesn't apply; if you're trying to work something out modulo a product of two primes, say pq, then you can work it out modulo p and modulo q and use the extended Euclidean algorithm to put the pieces together.
In Java you could multiplicate it into a long and after that modulo and cast into int. something like this: (product should already be a long, otherwise you are not going to get the correct answer) long modulo = 1000000007L. int result = (int) (product * modulo); 4.
9 Δεκ 2022 · Count pairs whose product modulo 10^9 + 7 is equal to 1. Given an array arr [], the task is to count the number of unordered pairs (arr [i], arr [j]) from the given array such that (arr [i] * arr [j]) % 109 + 7 is equal to 1. Example:
16 Μαΐ 2020 · 69. 7.7K views 4 years ago JHARKHAND. This video is to understand result mod 10^9+7 which is asked sometimes in competitive programming. Because of a this sometimes all test case is not...
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How to solve $$$3 = 4x + 5\ \text{ mod } 10^9 + 7$$$? Simply pretend that $$$x$$$ is a real number and get $$$x = -1/2\ \text{ mod } 10^9 + 7 = 500000003$$$. (Technically, all $$$x$$$ whose residue is $$$500000003$$$, including rationals, will satisfy the equation.)
