Each contest lasts 100 minutes.
Each contest must contain 4 problems.
You are only eligible for the next contest if the contestant solved all the problems of past contests, unless there is an issue not resolved by any other contestant.
Example:
Event: Selection for Mineira
Create alert
From "missing 15 minutes" until the end of the test (known as Blind): the score remains frozen, but the user stop knowing the results of your own submissions.
From "missing 60" to "missing 16" (known as Frozen): the overall score is frozen, that is, it stays exactly the same for the rest of the race, even though teams have hit new problems. The only indication that other teams got it right is the balloons that keep coming. For the team itself, the system also gives the answer to your submissions.
Incluir tempo de frozen no placar do contest, de forma que os participantes não vejam o desempenho dos demais por um certo tempo antes do final. Ao término do período do contest o placar final é apresentado (criar opção de o cabeça de pudim gerador do contest bloquear o placar para liberação manual).