import java.io.*;\x0d \x0d public class AsciiDiag{\x0d public static void main(String[] args){\x0d try{\x0d int i = 0;\x0d String s = "";\x0d BufferedReader in = new BufferedReader(new InputStreamReader(System.in));\x0d String line = in.readLine();\x0d while(line != null){\x0d s += line.charAt(i);\x0d i++;\x0d line = in.readLine(); \x0d }\x0d System.out.println(s);\x0d }catch(Exception e){e.printStackTrace();}\x0d }\x0d }
Note that non-ascii characters in the above source code will be escaped (such as \x9f).