Becoming an International Grandmaster (IGM) on Codeforces requires a lot of dedication, practice, and problem-solving skills. Here are the steps to help you on your journey:
Understand the basics and prerequisites: Make sure you have a solid understanding of programming languages, algorithms, and data structures. Choose a programming language you're comfortable with, such as C++, Java, or Python.
Learn algorithms and data structures: Familiarize yourself with essential algorithms and data structures like sorting, searching, graph theory, dynamic programming, and trees. There are many resources available online, such as:
[Introduction to Algorithms](https://mitpress.mit.edu/books/introduction-algorithms-third-edition) by Cormen, Leiserson, Rivest, and Stein
Competitive Programmer's Handbook by Antti Laaksonen
[Stanford's Algorithm Course on Coursera](https://www.coursera.org/specializations/algorithms)
Join and practice on Codeforces: Create an account on Codeforces and start participating in contests. Solve problems from previous contests and practice on their problemsets to improve your skills.
Learn from others: Analyze the solutions and editorials of other users, especially those who have higher ratings. Join the Codeforces community and engage with other participants to learn new techniques and strategies.
Upsolve problems: After each contest, make sure to solve the problems you couldn't during the competition. This will help you to identify your weaknesses and learn from your mistakes.
Participate in virtual contests: Virtual contests on Codeforces allow you to compete in past contests as if they were happening live, simulating the contest environment. This will help you improve your contest skills and time management.
Consistency and perseverance: Becoming an International Grandmaster takes time and consistent effort. Set a regular schedule for practice and stick to it. Keep participating in contests and learn from each experience.
Track your progress: Monitor your rating and performance in contests. Analyze your strengths and weaknesses, and focus on improving your weak areas.
Stay up-to-date with algorithms and techniques: Regularly read articles, blogs, and research papers on new algorithms and techniques in competitive programming. This will expand your knowledge and help you stay ahead in the competitions.
Never give up: Becoming an International Grandmaster is a challenging and time-consuming goal. There will be setbacks and failures along the way, but don't get discouraged. Keep pushing yourself and learning from your mistakes, and eventually, you'll achieve your goal.
Remember, practice is key. The more problems you solve, the better you'll become at competitive programming, and the closer you'll get to becoming an International Grandmaster on Codeforces.