enum M{M;System z;int i;{String s=new java.util.Scanner(z.in).useDelimiter("@").next();for(;i<661;)s=s.replaceAll("(\\b"+i++*66%661+") (.*)","$2 $1");z.out.print(s);}}
Note that non-ascii characters in the above source code will be escaped (such as \x9f).