Yes, during the competition we will give out important information through our noticeboard that will be available on our website. Send your questions about the tasks and other things to firstname.lastname@example.org.
You can cheer each other on using our forum. You can communicate in Czech (or Slovak) and English.
The competition has two parallel parts. The major part starts at the beginning of the competition
and one hour later the Hurry-up series will begin. These will then run in parallel
until the competition ends. In the second half of the competition you will be able
to skip problems.
For the Hurry-up series see the rules and the questions and answers below.
You will get the seven initial problems when the competition starts. You can expect new problems with the Hurry-up series. During the competition you must solve the problems you have to get new ones or, in the second part, by skipping problems. The exchange is always one for one. You can find more information in the rules.
Yes, after the end of the competition the solutions will appear on our website. Some time after the end the organizers will still be on the website and will be reacting to your recommendations, experiences or troubles relating the competition or the problems.
The task should make it clear. If it isn't clear then contact the organizers. In general it is true that more significant digits are not a problem.
Examples of correct rounding of a result can be found in rules.
Yes, you can answer any question as many times as you want to. Remember though that by submitting wrong answers you will lower the potential point gain from the question and also that you can't answer the problems from the same category incorrectly more than once in a minute (the problems from the main category and the three hurry-up categories). For more information see the rules of the competition.
It is a period in the competition between 18:00 and 20:00 CET when
you can solve new and relatively easy problems. However, you can get
bonus points only until 18:30 CET. It is a series of problems that runs
in parallel to the major competition. The Hurry-up series has some specific
You can find more about this in the rule section.