2 weeks and a Div.2 only const doesn't make sense really :|

Can anyone tell me why this code doesn't compile ? I'm not really good in C++ so please help !

http://ideone.com/DKJ2P3

take a look at this problem : 309C - Memory for Arrays why this submission get TL ? 9716916

How can I solve this problem please help :)

34E - Collisions