import java.io.*;

public class proov{
	public static void main(String argumendid[]){
   File kataloog=new File("."); 
   String failid[]=kataloog.list();
     for(int i=0;i<failid.length; i++)
      {if (new File(failid[i]).isDirectory()){
        String[] failid2=new File(failid[i]).list();
        String failidkoos[]=new String[failid.length+failid2.length];
        for(int j=0; j<failid.length; j++){
          failidkoos[j]=failid[j];
        }
        for(int j=failid.length; j<failidkoos.length; j++){
          failidkoos[j]=failid2[j-failid.length];
        }
        failid=failidkoos;
      }
     }  
        for(int i=0;i<failid.length; i++)
        if (new File(failid[i]).length()<500){
        System.out.println(failid[i]);
     }
    } 
 }
 //Jaanus Sootla, Janar Tammeniit, Andrus Suik, Janne Monso