import local.units.sdsu.io.*;

 import java.lang.*;

 import java.io.*;


 public class SymmetryCheck

 {

 // Mainline Variable Declarations

 static PrintStream output = System.out;

 static ASCIIInputStream input =

         new ASCIIInputStream(System.in);


 static final int n = 4;

 static int row,column;

 static boolean symmetric;

 static int a[][] = new int[n][n];


    public static void main(String argv[])

                   throws IOException

       {

       `Format.print(output,"Enter array row by row\n");


       for(row=0;row<n;row++)

          for(column=0;column<n;column++)

               a[row][column] = input.readInt();


       symmetric = true;

       for(row=0;row<n;row++)

          for(column=0;column<n;column++)

               if(a[row][column] != a[column][row])

                    symmetric = false;


       if(symmetric)

           Format.print(output,"Symmetric\n");

       else

           Format.print(output,"Not symmetric\n");`

       }

    }