Finally, after some months of research I accept user input, but now I'm trying to print it in the screen. Is that possible using Malbolge?
It is easy like this:
(=BA#9"=<;:3y7x54-21q/p-,+*)"!h%B0/.~P<<:(8&66#"!~}|{zyxwvugJ%
(Malbolge cat program, public domain)