MAIN : Take-Out

[[Iasi] georgepopoiu]

Hello, I'm trying to solve this task :
http://main.edu.pl/en/archive/oi/20/usu

Someone suggested that I can use a queue, but I cannot wrap my head around it. I cannot find a way to use it that is good in all cases.

Anyone can give me some more hints ?

The tests are also available :
http://main.edu.pl/en/user.phtml?op=tes ... &task=1086

Thanks in advance !