class M{static void Main(){for(int i=0;;)System.Console.Write("not @n/2 @@not n/2 ".Split('@')["\x125R#\x02\x0bUKDP&<\x0fZL\x01g"[i/3]/"\x01\x05\x19"[i++%3]%5]+"x\n");}}
Note that non-ascii characters in the above source code will be escaped (such as \x9f).