There is no way to set a problem as one of your favourites in the problem page itself and you have to navigate to the problem's contest and from there set the problem as your favourite.

It's not easy and me myself for a long time did set the contest of the problem as favourite instead of the problem itself and today I realised the fact and I think it should be a way to set the problem as favourite in the page itself, because this way it's too hard to do so.

I have made a demo of the feature I'm talking about, You can see it below.

Happy New Year, everyone! I’m super excited to share that I hit my goal of solving 150 problems on Codeforces this year! It’s been an amazing journey full of challenges, learning, and growth, and reaching this milestone feels incredible. Every problem pushed me a little further, and every success reminded me that persistence really pays off.

I hope 2026 brings all of you amazing opportunities, big wins, and moments that make you proud. Let’s make this year a year of growth, achievement, and happiness for everyone. Here’s to crushing our goals, learning new things, and making 2026 an unforgettable year!