import java.math.BigInteger;
import java.util.ArrayList;

class MemoryCell<AnyType>
{
    public MemoryCell( AnyType v )
    {
        value = v;
    }

    public void setValue( AnyType v )
    {
        value = v;
    }

    public AnyType getValue( )
    {
        return value;
    }

    public String toString( )
    {
        return "[MC " + value + "]";
    }

    private AnyType value;
}

class Day22
{
    public static double totalArea( Shape [ ] arr )
    {
        double total = 0.0;

        for( Shape s : arr )
            total += s.getArea( );

        return total;
    }

    public static double totalArea( ArrayList<? extends Shape> arr )
    {
        double total = 0.0;

        for( Shape s : arr )
            total += s.getArea( );

        return total;
    }


    public static void main( String [ ] args )
    {
        MemoryCell<String> m1 = new MemoryCell<String>( "hello" );
        MemoryCell<BigInteger> m2 =
            new MemoryCell<BigInteger>( new BigInteger( "12345678901223345" ) );

        Square [ ] arr2 = { new Square( 3 ), new Square( 2 ) };

        ArrayList<Square> arr = new ArrayList<Square>( );
        
        arr.add( new Square( 3 ) );
        arr.add( new Square( 2 ) );


        System.out.println( m1 );
        System.out.println( m2 );

        m1.setValue( "newvalue"  );

        String str = m1.getValue( );

        System.out.println( str + " with length " + str.length( ) );

        for( Shape s : arr )
            System.out.println( s );

        System.out.println( totalArea( arr ) );
        System.out.println( totalArea( arr2 ) );

        Object [ ] arr3 = new BigInteger[ 2 ];
        arr3[ 0 ] = "hello";
        System.out.println( arr3[ 0 ] );
    }
}