There is my code. My stress works fine. The size of output program is something near 4/5 * length bytes.
Using gets, all endl are written as '@'. There is an assert, that i haven't forgotten some symbols. Please, help!
http://pastebin.com/WnQvat6g

I suggest I got CE because of too long strings.)
Stupid compiler:)

I got AC)
I have some question: why symbols '[', ']' and '~' are included in the texts?

It's not clear from the statement, but I checked: output of your program (program, that prints input and has little size)  may have size more than 64kb (all programs have some restrictions to the size in bytes).