At the /profile page, the application must talk to the Codeforces API when the user adds a problem/contest to notice (or not) if the problem/contest being added has already been solved. Make sure if the user still wants to add it in case it's been solved.
The same thing should be done when loading the page and there are links in the database already.
At the /profile page, the application must talk to the Codeforces API when the user adds a problem/contest to notice (or not) if the problem/contest being added has already been solved. Make sure if the user still wants to add it in case it's been solved.
The same thing should be done when loading the page and there are links in the database already.