import java.io.*;
/** CopyCon.java
*/
public class CopyCon{
 
    public CopyCon(String fileName){
        try{
            InputStreamReader isr = new InputStreamReader(System.in);
            BufferedReader br = new BufferedReader(isr);
            FileWriter fw = new FileWriter(fileName);
            String lineRead = "";
            while (!(lineRead = br.readLine()).equals("stop")){
                fw.write(lineRead + "\n");
            }
            fw.close();        
        }catch(IOException ioe){
            System.err.println("IOException: " + ioe.getMessage());
        }
    }
    
    public static void main(String[] args){
        if (args.length != 1){
            System.err.println("Useage: java CopyCon fileName");
        }else{
            new CopyCon(args[0]);
        }
    }
}