Hello Codeforcers!!

What do you think about Pretests?? Is it better that Pretests will be weak?

In a normal programming contest there is no Hacks and pretest but in codeforces weak pretests are a technique for Authors to make Problems have lower accepted solutions But maybe Hacks make contests more attractive and... .

Please write your comment about Pretest and so write your reasons. Tnks a lot.