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This is a detailed and formal version of the Codeforces...
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Codeforces is a platform for competitive programming contests and problems. Find the latest announcements, results, editorial solutions and ratings for Codeforces rounds in different divisions and languages.
Codeforces. Programming competitions and contests, programming community. The only programming contests Web 2.0 platform
Codeforces Global Round 26 marks the second round in the 2024 series of Codeforces Global Rounds. These rounds are open and rated for everyone. The prizes for this round are as follows:
- General Information About A Round
- Questions
- Problem Solution
- Compiling Solutions
- Judging Solutions
- Hacks
- Can-Do's and Can't-Do's
- Standings
- System Testing and Final Standings
- Intellectual Property
- GeneratedCaptionsTabForHeroSec
You need to register to participate in a round. The registration opens six hours before the start of the contest and closes 5 minutes before it, unless the information about the round states otherw...The system of conducting contests has two interface languages available: Russian and English. The contestants can switch between these two languages.A round continues for 2 hours, unless the information about the round states other duration time.Contestants are given 5 problems to solve, unless the information about the round states another number of problems.During a contest the contestants can ask questions to the contest jury via the system. The questions may concern mistakes, ambiguous spots and inaccuracies in the statement.A question must be asked in one of two languages: Russian or English. The question must be clear and written in a correct language. Otherwise, the jury preserves the right not to consider the quest...The contest jury can answer the given question in an arbitrary text form.The answer No commentsmeans that the question either doesn't the requirements listed in point 2 or the answer to the question is in the statement or in the contest rules.A problem solution is a program written in one of the following programming languages (different problems can be solved in different programming languages, the list of languages can be widened):Requirements to the solutions:After a contestant solves a problem, he submits the solution via the contest system interface and continues working on other problems. After the system receives and judges a solution, it immediatel...A contestant can see the results of judging of his solutions on the corresponding tab of the contest system. During a contest a contestant can see the results of only his solutions' judging.As a contestant submits a solution, he chooses a compiler that the judging system should use as it compiles the program. The judging system uses the following compilers for judging (the jury has th...The contest organizers are not responsible for problems caused by the compiler's version in the judging system not matching the compiler's version used by the contestant as he was writing the progr...Solutions are compiled and run under Windows OS. Line breaks are set by a couple of symbols #13#10. A file's or an input's last line should end with a line break (right before the end of the file).If a compilation error occurs, than the contestant gets the judging result as 'Compilation error' and the compilation log.During the contest the solutions are judged on a small number of tests called pretests.The result of judging the solution on the pretests are displayed to the contestant right after the judging.Each test is represented by the input for the contestant's program. The limits for the input contained in the test are indicated in the problem statement.All problems indicate the maximum time a program can take to work on one test and the maximum memory that can be consumed.A contestant can lock any of his pre-solved problems. That means that the contestant loses the right to submit solutions for this problem.After the contestant locks a problem, he gets the right to view the original codes of submitted solutions of other contestants for this problem that share the same room with him. Having viewed anot...A contestant gets 100 points for a successful hack and a penalty of 50 points for an unsuccessful hack.If a contestant's solution is successfully hacked, then happens the following:During the round the contestants are allowed to use any books and personal notes as well as a code written beforehand by you personally.It is forbidden to use somebody else's code in the solution. You may use third-party prewritten code with some restrictions, read carefully about it.It is allowed to use any sources of information on the Internet (but it is forbidden to copy-paste somebody else's code).It is forbidden to obfuscate the solution code as well as create obstacles for its reading and understanding. That is, it is forbidden to use any special techniques aimed at making the code difficu...During the contest the current results' table is available to the contestants. The table shows the current place of each contestant. The table also contains the information about the hacks and the...All intermediate results are unofficial.After a contest is over, the results of the contestants' solutions' judging on the main set of tests are published.The main test set is used to judge verified solutions, i.e., the solutions that meet all these criteria:A problem is considered solved by the contestant if the contestant's solution passed all tests from the main set of tests.A solved problem brings to the contestant the score, equal to the pre-score of his solution for this problem.The rules below are used each time if for a particular round there are no separate rules. Competitors retain ownership of all intellectual and industrial property rights (including moral rights) in...As a condition of submission, Competitor grants Codeforces, its subsidiaries, agents and partner companies, a perpetual, irrevocable, worldwide, royalty-free, and non-exclusive license to use, repr...Contestants provide submissions on an "as is" basis, without warranties or conditions of any kind, either express or implied, including, without limitation, any warranties or conditions of title, n...Learn the detailed and formal rules of Codeforces contests, such as registration, duration, languages, problems, solutions, compilers and more. The rules are updated and modified for specific rounds by the contest organizers.
Jun 2, 2022 · Learn how to use Codeforces, a popular platform for competitive coding, with these 10 tips. Find out how to practice problems, watch editorials, up-solve contests, and improve your rating.
Jun 20, 2023 · The Atcoder DP contest is essential for mastering DP, with only 26 questions. Codeforces educational rounds, codechef starters, and atcoder beginner contests are also helpful for improvement.
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