Improving your coding skills - Julio Merino (jmmv.dev)

If you want to improve your coding skills, you can do so by solving some problems used in the ACM International Collegiate Programming Contest. You can find the entire collection here, which is really huge. Solutions to problems are verified by an automated program, the Online Judge. To get started, you must sign up for an account; after that, you will be given a user identifier and a password. The identifier must appear on all problems you solve (check the documentation in the site for more information), so that the judge knows who solved them.