// AdjMatrix to AdjLists - mjd@cs.auckland.ac.nz

import java.io.*;
import graphs.*;

public class matrix2lists {

public static void main(String argv[]) 
{
 try {
   BufferedReader input = new BufferedReader(new InputStreamReader(System.in));

   GraphAdjMatrix G; do
   {
     G = new GraphAdjMatrix(input);
     System.out.print(G.toStringAdjLists());

   } while(G.order() > 0);

 }
 catch ( Exception e )
 {
   System.err.println("Exception: "+e);
 }
} 
} // matrix2lists