import java.io.*;

class TestShape
{
    private static BufferedReader in;

    private static void insertionSort( Shape [ ] a )
    {
        for( int p = 1; p < a.length; p++ )
        {
            int j = p;
            Shape tmp = a[ p ];

            for( ; j > 0 && tmp.lessThan( a[ j - 1 ] ); j-- )
                a[ j ] = a[ j - 1 ];
            a[ j ] = tmp;
        }
    }

    private static Shape readShape( )
    {
        double rad;
        double len;
        double wid;
        String oneLine;

        try
        {
            System.out.println( "Enter shape type:" );
            do
            {
                oneLine = in.readLine( );
            } while( oneLine.length( ) == 0 );
            
            switch( oneLine.charAt( 0 ) )
            {
              case 'c':
                System.out.println( "Enter radius: " );
                rad = Integer.parseInt( in.readLine( ) );
                return new Circle( rad );
              case 's':
                System.out.println( "Enter side: " );
                len = Integer.parseInt( in.readLine( ) );
                return new Square( len );
              case 'r':
                System.out.println( "Enter length and width "
                                  + "on separate lines: " );
                len = Integer.parseInt( in.readLine( ) );
                wid = Integer.parseInt( in.readLine( ) );
                return new Rectangle( len, wid );
              default:
                System.err.println( "Need c, r, or s" );
                return new Circle( 0 );
            }
        }
        catch( IOException e )
        {
            System.err.println( e );
            return new Circle( 0 );
        }
    }


    public static void main( String [ ] args )
    {
        try
        {
                // Get # of shapes
            System.out.println( "Enter # of shapes: " );
            in = new BufferedReader( new InputStreamReader( System.in ) );
            int numShapes = Integer.parseInt( in.readLine() );

                // Read the shapes
            Shape [ ] array = new Shape[ numShapes ];
            for( int i = 0; i < numShapes; i++ )
                array[ i ] = readShape( );

                // Sort and output
            insertionSort( array );
            System.out.println( "Sorted by area:" );
            for( int i = 0; i < numShapes; i++ )
                System.out.println( array[ i ] );
        }
        catch( Exception e )
          { System.out.println( e ); }
    }
}