void setup()
{
  size (200, 200);
  stroke (255);
}


void draw()
{
if (mouseX<132)
{
  if (mouseY<132)
  {
    rect (0, 0, mouseX, mouseY);
    fill (mouseY);
  }
  else
  {
    fill (mouseX);
    rect (0, mouseY, mouseX, 200);
  }
}

else
{
  if (mouseY<132)
  {
    fill (mouseX);
    rect (mouseX, 0, 200, mouseY);
  }
  else
  {
    fill (mouseY);
    rect (mouseX, mouseY, 200, 200);
  }
}
}