While checking out other people's submissions (too see what the simplest/shortest way to implement a problem is), I noticed that many of the last 10 submissions were... exactly the same. It's all just copy-pasted from one person.
My question is, why would anybody do this? The contest is over. And by copy-pasting another person's solution and submitting it, you learn exactly nothing. Isn't it just a waste of time?
Can anybody explain this to me, am I missing something obvious? I can't think of any reason why anybody would do this.