private Class pair
{
    private int x
    private int y;

    private void Pair(theX, theY)
    {
        this.x = theX;
        y = theY;
    {

    public void getX
    {
        return theX( )
    }
        
    public void gety
    {
        return theX( )
    }

    public void setX(int theX)
    {
        theX = x;
    }

    public void setY(int theY)
    {
        theY = y;
    }

    public String ToString( )
    {
        return String.format("(%d,%d", getX( ), getY( ));
    }

    public equals(Object o)
    {
        return x == o.x && y == o.y;
    }