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cp-algorithms.com

the goal of this project is to translate the wonderful resource http://e-maxx.ru/algo which provides descriptions of many algorithms and data structures especially popular in field of competitive programming. moreover we want to improve the collected knowledge by extending the articles and adding new articles to the collection.

Main Page - Algorithms for Competitive Programming

Global rank: #199637
Daily visitors: 10.55K
Monthly Visits: 316,593
Pageviews per user: 2.16
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TLD: com
IP Address: 199.36.158.100
Organization: Google LLC
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Click here to check amazing cp algorithms content for India. Otherwise, check out these important facts you probably never knew about cp-algorithms.com

the goal of this project is to translate the wonderful resource http://e-maxx.ru/algo which provides descriptions of many algorithms and data structures especially popular in field of competitive programming. moreover we want to improve the collected knowledge by extending the articles and adding new articles to the collection.

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cp-algorithms.com Trust Score

cp-algorithms.com is probably legit as the trust score is reasonable. Our algorithm rated cp-algorithms.com a 82. Although our rating of cp-algorithms.com is medium to low risk, we encourage you to always vote as the evaluation of the site is done automatically.

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Which Sites are Alternatives & Competitors to cp-algorithms.com?

Explore the top alternatives and rivals of cp-algorithms.com in September 2024, and assess their data relating to website traffic, SEO, Web Server Information, and Whois. Refer to the list below for the best competitors of cp-algorithms.com, and simply click on each one to delve into their specific details.

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Mentioned on Their Website:

  • github.com
    GitHub - Priyansh19077/CP-Templates: Here are my template …

    https://github.com/Priyansh19077/CP-Templates

    Here are my template codes for Competitive Programming with optimised implementations of various algorithms. I personally use them every day and have tested almost all of …

  • cp-algorithms.com
    Bellman-Ford - finding shortest paths with negative weights

    https://cp-algorithms.com/graph/bellman_ford.html

    The algorithm bears the name of two American scientists: Richard Bellman and Lester Ford. Ford actually invented this algorithm in 1956 during the study of another mathematical problem, which eventually reduced to a subproblem of finding the shortest paths in the graph, and Ford gave an outline of the algorithm to solve this problem.

  • cp-algorithms.com
    Minimum Spanning Tree - Kruskal - cp-algorithms.com

    https://cp-algorithms.com/graph/mst_kruskal.html

    Minimum spanning tree - Kruskal's algorithm ¶. Given a weighted undirected graph. We want to find a subtree of this graph which connects all vertices (i.e. it is a spanning tree) and has the least weight (i.e. the sum of weights of all the edges is minimum) of all possible spanning trees. This spanning tree is called a minimum …

  • cp-algorithms.com
    Floyd-Warshall - finding all shortest paths - Algorithms for

    https://cp-algorithms.com/graph/all-pair-shortest-path-floyd-warshall.html

    Floyd-Warshall Algorithm. Given a directed or an undirected weighted graph G with n vertices. The task is to find the length of the shortest path d i j between each pair of vertices i and j . The graph may have negative weight edges, but no negative weight cycles. If there is such a negative cycle, you can just traverse this cycle over and over ...

  • cp-algorithms.com
    Finding Power of Factorial Divisor - cp-algorithms.com

    https://cp-algorithms.com/algebra/factorial-divisors.html

    Home Home Main Page Navigation Tag index How to Contribute Code of conduct Preview Algebra Algebra Fundamentals Fundamentals Binary Exponentiation Euclidean algorithm ...

  • cp-algorithms.com
    Flows with demands - Algorithms for Competitive Programming

    https://cp-algorithms.com/graph/flow_with_demands.html

    Flows with demands. In a normal flow network the flow of an edge is only limited by the capacity c ( e) from above and by 0 from below. In this article we will discuss flow networks, where we additionally require the flow of each edge to have a certain amount, i.e. we bound the flow from below by a demand function d ( e) : d ( e) ≤ f ( e) ≤ ...

  • cp-algorithms.com
    Minimum-cost flow - Algorithms for Competitive Programming

    https://cp-algorithms.com/graph/min_cost_flow.html

    Minimum-cost flow - Successive shortest path algorithm. Given a network G consisting of n vertices and m edges. For each edge (generally speaking, oriented edges, but see below), the capacity (a non-negative integer) and the cost per unit of flow along this edge (some integer) are given. Also the source s and the sink t are marked.

  • cp-algorithms.com
    Fast Fourier transform - Algorithms for Competitive Programming

    https://cp-algorithms.com/algebra/fft.html

    The function gets passed a vector of coefficients, and the function will compute the DFT or inverse DFT and store the result again in this vector.

  • github.com
    GitHub - cp-algorithms/cp-algorithms: Algorithm and data …

    https://github.com/cp-algorithms/cp-algorithms

    Algorithms for Competitive Programming. The goal of this project is to translate the wonderful resource https://e-maxx.ru/algo which provides descriptions of many …

  • cp-algorithms.com
    Primality tests - Algorithms for Competitive Programming

    https://cp-algorithms.com/algebra/primality_tests.html

    This is a probabilistic test. Fermat's little theorem (see also Euler's totient function) states, that for a prime number p and a coprime integer a the following equation holds: a p − 1 ≡ 1 mod p. In general this theorem doesn't hold for composite numbers. This can be used to create a primality test. We pick an integer 2 ≤ a ≤ p − 2 ...

  • en.cppreference.com
    Algorithms library - cppreference.com

    https://en.cppreference.com/w/cpp/algorithm

    The algorithms library defines functions for a variety of purposes (e.g. searching, sorting, counting, manipulating) that operate on ranges of elements. Note that …

  • cp-algorithms.com
    Heavy-light decomposition - Algorithms for Competitive …

    https://cp-algorithms.com/graph/hld.html

    Similar to the above problems, the solution is to simply apply heavy-light decomposition and make a segment tree over each heavy path. Each repainting on the path ( a, b) will turn into two updates ( a, l) and ( b, l) , where l is the lowest common ancestor of the vertices a and b . O ( log. ⁡. n) per path for O ( log.

  • cp-algorithms.com
    Treap - Algorithms for Competitive Programming

    https://cp-algorithms.com/data_structures/treap.html

    A treap is a data structure which combines binary tree and binary heap (hence the name: tree + heap ⇒ Treap). More specifically, treap is a data structure that stores pairs ( X, Y) in a binary tree in such a way that it is a binary search tree by X and a binary heap by Y . If some node of the tree contains values ( X 0, Y 0) , all nodes in ...

  • codeforces.com
    cp-algorithms.com update + Hacktoberfest - Codeforces

    https://codeforces.com/blog/entry/70356

    cp-algorithms.com update + Hacktoberfest. For everybody new to cp-algorithms.com. It is a community project, that started as a translation project of the Russian algorithm website e-maxx.ru. In the meantime most of the articles are translated, multiple new articles have been added, old articles have been improved and extended.

  • cp-algorithms.com
    String Hashing - Algorithms for Competitive Programming

    https://cp-algorithms.com/string/string-hashing.html

    For the conversion, we need a so-called hash function . The goal of it is to convert a string into an integer, the so-called hash of the string. The following condition …

  • cp-algorithms.com
    Binary Search - Algorithms for Competitive Programming

    https://cp-algorithms.com/num_methods/binary_search.html

    Taking log 2 on both sides, we get h ≈ log 2. ⁡. ( R − L) ∈ O ( log. ⁡. n) . Logarithmic number of steps is drastically better than that of linear search. For example, for n ≈ 2 20 ≈ 10 6 you'd need to make approximately a million operations for linear search, but only around 20 operations with the binary search.

  • cp-algorithms.com
    Operations on polynomials and series - cp-algorithms.com

    https://cp-algorithms.com/algebra/polynomial.html

    Thus, polynomials may be considered formal power series, but with finite number of coefficients. Formal power series play a crucial role in enumerative combinatorics, where they're studied as generating functions for various sequences. Detailed explanation of generating functions and the intuition behind them will, …

  • cp-algorithms.com
    Navigation - Algorithms for Competitive Programming

    https://cp-algorithms.com/navigation.html

    Euclidean algorithm for computing the greatest common divisor. Extended Euclidean Algorithm. Linear Diophantine Equations. Fibonacci Numbers. Prime numbers. Sieve of Eratosthenes. Linear Sieve. Primality tests. Integer factorization.

  • cp-algorithms.com
    Minimum stack / Minimum queue - cp-algorithms.com

    https://cp-algorithms.com/data_structures/stack_queue_modification.html

    We can accomplish that by storing the index for each element in the queue. And we also remember how many elements we already have added and removed. …

  • cp-algorithms.com
    Montgomery Multiplication - Algorithms for Competitive …

    https://cp-algorithms.com/algebra/montgomery_multiplication.html

    All with the usual algorithms. However this is not the case for multiplication. We expect the result to be: x ¯ ∗ y ¯ = x ⋅ y ― = ( x ⋅ y) ⋅ r mod n. But the normal multiplication will give us: x ¯ ⋅ y ¯ = ( x ⋅ y) ⋅ r ⋅ r mod n. Therefore the multiplication in the Montgomery space is defined as:

  • codeforces.com
    How to Effectively Practice CP + Problem Solving Guide

    https://codeforces.com/blog/entry/116371

    Goal of Practice. First off, what is the main goal in practicing efficiently? I would argue you want to come across as many subtle ideas and concepts as quickly as possible and …

  • cp-algorithms.com
    Modular Inverse - Algorithms for Competitive Programming

    https://cp-algorithms.com/algebra/module-inverse.html

    A modular multiplicative inverse of an integer a is an integer x such that a ⋅ x is congruent to 1 modular some modulus m . To write it in a formal way: we want to find an integer x so that. a ⋅ x ≡ 1 mod m. We will also denote x simply with a − 1 . We should note that the modular inverse does not always exist. For example, let m = 4 ...

  • cp-algorithms.com
    Lowest Common Ancestor - O(sqrt(N)) and O(log N) with O(N

    https://cp-algorithms.com/graph/lca.html

    Home Home Main Page Navigation Tag index How to Contribute Code of conduct Preview Algebra Algebra Fundamentals Fundamentals Binary Exponentiation Euclidean algorithm ...

  • cp-algorithms.com
    Finding faces of a planar graph - Algorithms for Competitive …

    https://cp-algorithms.com/geometry/planar.html

    Finding faces of a planar graph. Consider a graph G with n vertices and m edges, which can be drawn on a plane in such a way that two edges intersect only at a common vertex (if it exists). Such graphs are called planar. Now suppose that we are given a planar graph together with its straight-line embedding, which means that for each …

  • cp-algorithms.com
    Sprague-Grundy theorem. Nim - cp-algorithms.com

    https://cp-algorithms.com/game_theory/sprague-grundy-nim.html

    To calculate the Grundy value of a given state you need to: Get all possible transitions from this state. Each transition can lead to a sum of independent games (one game in the degenerate case). Calculate the Grundy value for each independent game and xor-sum them. Of course xor does nothing if there is just one game.

  • cp-algorithms.com
    Euler's totient function - Algorithms for Competitive Programming

    https://cp-algorithms.com/algebra/phi-function.html

    The following properties of Euler totient function are sufficient to calculate it for any number: Therefore we have: ϕ ( p) = p − 1. Which gives us: ϕ ( p k) = p k − p k − 1. ϕ ( a b) = ϕ ( a) ⋅ ϕ ( b). This relation is not trivial to see. It …

  • cp-algorithms.com
    Sqrt Decomposition - Algorithms for Competitive Programming

    https://cp-algorithms.com/data_structures/sqrt_decomposition.html

    Sqrt Decomposition. Sqrt Decomposition is a method (or a data structure) that allows you to perform some common operations (finding sum of the elements of the sub-array, finding the minimal/maximal element, etc.) in O ( n) operations, which is much faster than O ( n) for the trivial algorithm. First we describe the data structure for one of …

  • cp-algorithms.com
    Suffix Automaton - Algorithms for Competitive Programming

    https://cp-algorithms.com/string/suffix-automaton.html

    Last update: November 9, 2023 Translated From: e-maxx.ru Suffix Automaton¶. A suffix automaton is a powerful data structure that allows solving many string-related problems.. For example, you can search for all occurrences of one string in another, or count the amount of different substrings of a given string.

  • cp-algorithms.com
    Ternary Search - Algorithms for Competitive Programming

    https://cp-algorithms.com/num_methods/ternary_search.html

    Run time analysis. T ( n) = T ( 2 n / 3) + O ( 1) = Θ ( log. ⁡. n) It can be visualized as follows: every time after evaluating the function at points m 1 and m 2 , we are essentially ignoring about one third of the interval, either the left or right one. Thus the size of the search space is 2 n / 3 of the original one.

  • github.com
    xirc/cp-algorithm: Competitive Programming Library & Solutions

    https://github.com/xirc/cp-algorithm

    Competitive Programming Library & Solutions. Contribute to xirc/cp-algorithm development by creating an account on GitHub.

  • codeforces.com
    What happened to cp-algorithms.com? - Codeforces

    https://codeforces.com/blog/entry/93912

    I've temporarily set up the website at a new host (https://cp-algorithms.web.app/), and I'm working on getting the original URL working again. Unfortunately the cp …

  • cp-algorithms.com
    Josephus problem - Algorithms for Competitive Programming

    https://cp-algorithms.com/others/josephus_problem.html

    And here we can clearly see the following pattern: J n, k = ( ( J n − 1, k + k − 1) mod n) + 1. J 1, k = 1. Here, 1-indexing makes for a somewhat messy formula; if you instead number the positions from 0, you get a very elegant formula: J n, k = ( J n − 1, k + k) mod n. So, we found a solution to the problem of Josephus, working in O ( n ...

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DNS Lookup

DNS entries, such as A, NS, MX, and TXT records, are crucial for the functioning of the Internet. The A record maps a domain name to an IPv4 address, while the NS record specifies authoritative name servers for a domain. The MX record identifies the mail server responsible for receiving email messages for a domain. Additionally, the TXT record allows for the association of any text information with a domain name. These records play a vital role in ensuring proper communication and connectivity across the internet.

HostClassTTLTypeData
cp-algorithms.comIN1799Aip: 199.36.158.100
cp-algorithms.comIN1800NStarget: dns2.registrar-servers.com
cp-algorithms.comIN1800NStarget: dns1.registrar-servers.com
cp-algorithms.comIN3601SOAmname: dns1.registrar-servers.comrname: hostmaster.registrar-servers.comserial: 1629387093refresh: 43200retry: 3600expire: 604800minimum-ttl: 3601
cp-algorithms.comIN1799TXTtxt: google-site-verification=G9remxg-0POH7LZ_70FdOeYpgXPDpG7tLry3qg5V84M

cp-algorithms.com Traffic Analysis

According to global rankings, cp-algorithms.com holds the position of #199637. It attracts an approximate daily audience of 10.55K visitors, leading to a total of 10666 pageviews. On a monthly basis, the website garners around 316.59K visitors.

Daily Visitors10.55K
Monthly Visits316.59K
Pages per Visit2.16
Visit Duration0:02:29
Bounce Rate65.83%
Want complete report?Full SEMrush Report >>
Daily Unique Visitors:
10553
Monthly Visits:
316593
Pages per Visit:
2.16
Daily Pageviews:
10666
Avg. visit duration:
0:02:29
Bounce rate:
65.83%
Monthly Visits (SEMrush):
319049

Traffic Sources

SourcesTraffic Share
Social:
2.24%
Paid Referrals:
5.90%
Mail:
0.43%
Search:
49.63%
Direct:
41.79%

Visitors by Country

CountryTraffic Share
India:
24.58%
Vietnam:
19.00%
United States:
8.25%
Bangladesh:
4.89%
Poland:
3.30%

SSL Checker - SSL Certificate Verify

An SSL certificate is a digital certificate that ensures a secure encrypted connection between a web server and a user's browser. It provides authentication and encryption to keep data private and protected during transmission. cp-algorithms.com supports HTTPS, demonstrating their commitment to providing a secure browsing experience for users.

name
synxite.net
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issuer
Google Trust Services LLC
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signatureTypeLN
sha256WithRSAEncryption
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668
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
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keyid:25:E2:18:0E:B2:57:91:94:2A:E5:D4:5D:86:90:83:DE:53:B3:B8:92
authorityInfoAccess
OCSP - URI:http://ocsp.pki.goog/s/gts1d4/CQgqXDoYDlQ CA Issuers - URI:http://pki.goog/repo/certs/gts1d4.der
subjectAltName
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certificatePolicies
Policy: 2.23.140.1.2.1 Policy: 1.3.6.1.4.1.11129.2.5.3

HTTP Headers

HTTP headers are additional segments of data exchanged between a client (e.g. a web browser) and a server during an HTTP request or response. They serve to provide instructions, metadata, or control parameters for the interaction between the client and server.

Status
HTTP/1.1 200 OK
Connection
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Content-Length
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Cache-Control
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Strict-Transport-Security
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Accept-Ranges
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Date
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X-Served-By
cache-sjc1000123-SJC
X-Cache
HIT
X-Cache-Hits
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X-Timer
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Vary
x-fh-requested-host, accept-encoding
alt-svc
h3=":443";ma=86400,h3-29=":443";ma=86400,h3-27=":443";ma=86400

Where is cp-algorithms.com hosted?

cp-algorithms.com is likely hosted in various data centers located across different regions worldwide. The current data center mentioned is just one of many where the website may be hosted.

Whois Information

WHOIS protocol used to get domain/IP info. Common for reg details, ownership of a domain/IP. Check cp-algorithms.com for reg/admin contact info, owner, org, email, phone, creation, and expiration dates.

Domain Updated Date:
Domain Created Date:
Domain Expiry Date:
Domain Name:
Registrar WHOIS Server:
Registrar Abuse Contact Email:
Registrar Abuse Contact Phone:
Domain Registrar:
Domain Owner:

N/A.

SEO Analysis

SEO analysis involves examining the performance of a website, including titles, descriptions, keywords, and website speed. It also includes identifying popular keywords and researching competitor websites to understand their strategies. The analysis aims to optimize the website's visibility and improve its ranking on search engines.

Title Tag:
Main Page - Algorithms for Competitive Programming

Length: 50 characters

Title tags are usually best kept short, within 50-70 characters. It's important to note that search engines will typically read the entire title tag even if it exceeds 70 characters, but there is a chance they may cut it off or disregard it.

Meta Description:
The goal of this project is to translate the wonderful resource http //e-maxx.ru/algo which provides descriptions of many algorithms and data structures especially popular in field of competitive programming. Moreover we want to improve the collected knowledge by extending the articles and adding new articles to the collection.

Length: 329 characters

What is the issue about?
TThe description is too long or too short. Search engine crawlers only show the first 150-160 characters of the description in the search results page, so if a description is too long, searchers may not see all of the text. If a description is too short, the search engines may add text found elsewhere on the page. Note that search engines may show a different description from the one you have authored if they feel it may be more relevant to a user's search.

How to fix?
Change the description in the tag in the page source to be between 25 and 160 characters in length.

Meta Keywords:

No meta keywords found.

In the realm of search engine optimization, the meta keywords tag has become a relic of the past due to its potential for misuse, ultimately leading major search engines to disregard it in their ranking algorithms.

Keywords Cloud:
Term Count Density
algorithm 19 2.53%
finding 14 1.87%
programming 11 1.47%
tree 10 1.33%
miscellaneous 9 1.20%
minimum 9 1.20%
paths 9 1.20%
cp-algorithms 8 1.07%
common 8 1.07%
articles 8 1.07%
shortest 8 1.07%

A crucial factor in search engine optimization is keyword density, which refers to the proportion of a particular keyword present in the text of a webpage. In order to achieve high rankings on search engine results pages, it is essential to maintain the appropriate keyword density for your primary keyword.

Headings:
<H1>
1
<H2>
2
<H3>
1
<H4>
0
<H5>
0
<H6>
0
<h1>Algorithms for Competitive Programming </h1>
<h2>Contributing </h2>
<h2>Changelog </h2>
<h3>New articles </h3>

In SEO, the primary focus is placed on keywords within the content. The title of the page holds the highest importance, followed by heading tags such as h1, h2, and h3. The h1 heading should be the largest on the page, while the h2 heading should be slightly smaller, and the h3 heading even smaller. This hierarchical structure is crucial for optimizing search engine rankings.

Image Alt Attribute:
73 images found in your page, and 66 images are without "ALT" text.

What is the issue about?
The tag does not have an ALT attribute defined. As a general rule, search engines do not interpret the content of image files. The text provided in the attribute enables the site owner to provide relevant information to the search engine and to the end user. Alt text is helpful to end users if they have images disabled or if the image does not properly load. In addition, the Alt text is utilized by screen readers. Make sure that your Alt text is descriptive and accurately reflects what the image represents and supports the content on the page.

How to fix?
Use the <img alt> attribute to write descriptive content for the image: <img source='pic.gif' alt='Accurate and descriptive keyword text that represents the image.' />.

Website Speed Test (Desktop):
0.01 seconds

Website speed is a measurement of how fast the content on your page loads. Website speed is one of many factors involved in the discipline of search engine optimization (SEO), but it is not the only one. In a recent study, the average load time for a web page was 3.21s.

Top Organic Search Terms:
Term Search Volume Traffic Traffic (%)
cp algorithms 170 0 0%

CO-Hosted

CoHosted refers to a situation where multiple domain names (websites) are using the same IP address to point to their respective web servers. They could be owned by different individuals or organizations and may serve entirely different purposes.

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Very positive reviews

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Average score: 5 stars

The total score is based on reviews found on the following sites
Scamadviser: 5/5 stars, 2 reviews


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