import java.io.*;

public class FileReaderWriterDemo
{
 public static void main (String[] args)
 {
  try
  {
   FileReader fr = new FileReader (FileDescriptor.in);
   FileWriter fw = new FileWriter (FileDescriptor.out);
   fw.write(fr.read());
   fr.close();
   fw.close();
  }
  catch (Exception e)
  {
  }
 }
}

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