If you are interested in helping us build our problem base, or if you would like to organise a contest of your own, please send an e-mail to the provided contact address (if you are a newcomer to the site, or have solved fewer than 20 problems, a little additional information about yourself is welcome but by no means obligatory). You will receive a reply with detailed instructions.
Please note that we reserve the right to correct, recategorise, modify or remove problems which are available for solving in the main problemset. This does not concern problems added specifically for use in private contests which are not visible in the archives of the online judge.
