• Challenge problem

    Due to issues with the judge data, we are removing the challenge problem Man of Steel from the problem set. The new challenge problem is HQNP Incomputable Hard.

    All of the submissions for the … more

  • Challenge problems information

    Challenge problems submission on Bubble Cup site are not functioning at the moment. We are working on fixing this. Meanwhile, you can work on problems on SPOJ. 

    Bubble Cup Team

  • First Round

    The first round is ON! Submit your solutions and start your journey to the finals!

  • Bubble Cup 8 Round One

    The countdown has started, less than a week until the first round kick-off.

    Register and be part of Bubble Community.

    Bubble Cup Team

  • Bubble Cup 8 Warm Up

    Dear Bubble Cup fans,


    New Bubble Cup Season is here! Eight times in a row, Bubble Cup will be your host in coding contest starting on 1st April!


    To warm up and prepare for the … more

  • Bubble Cup 7 - Final results

    Dear BubbleCup friends,


    Thank you for participating in the seventh edition of Bubble Cup. We hope you all enjoyed the competition and your stay in Belgrade as well.

    On behalf of … more

  • Bubble Cup 7 - Finalist teams list

    Hello competitors!

    The D Day has finally come - after long and heated qualifying rounds, we are happy to announce a list of the Bubble Cup 7 finalist teams.

    The finalists will soon receive emails … more

  • Bubble Cup 7 – Rounds are closed!

    Dear competitors,


    Bubble Cup 7 online rounds are officially closed.

    We’ll announce teams that qualified for Bubble Cup 7 finals soon.


    Stay tuned,

    Bubble Cup … more