size (400,400);
smooth ();
background (0,0,0);

fill (250,0,0);
ellipse (200,200,200,200);
fill (225,0,0);
ellipse (200,200,175,175);
fill (175,0,0);
ellipse (200,200,150,150);
fill (150,0,0);
ellipse (200,200,125,125);
fill (125,0,0);
ellipse (200,200,100,100);
fill (100,0,0);
ellipse (200,200,75,75);
fill (75,0,0);
ellipse (200,200,50,50);
fill (50,0,0);
ellipse (200,200,25,25);
fill (0,0,0);
ellipse (200,200,5,5);

fill (250,0,0);
ellipse (75,75,200,200);
fill (225,0,0);
ellipse (75,75,175,175);
fill (175,0,0);
ellipse (75,75,150,150);
fill (150,0,0);
ellipse (75,75,125,125);
fill (125,0,0);
ellipse (75,75,100,100);
fill (100,0,0);
ellipse (75,75,75,75);
fill (75,0,0);
ellipse (75,75,50,50);
fill (50,0,0);
ellipse (75,75,25,25);
fill (0,0,0);
ellipse (75,75,5,5);

fill (250,0,0);
ellipse (325,325,200,200);
fill (225,0,0);
ellipse (325,325,175,175);
fill (175,0,0);
ellipse (325,325,150,150);
fill (150,0,0);
ellipse (325,325,125,125);
fill (125,0,0);
ellipse (325,325,100,100);
fill (100,0,0);
ellipse (325,325,75,75);
fill (75,0,0);
ellipse (325,325,50,50);
fill (50,0,0);
ellipse (325,325,25,25);
fill (0,0,0);
ellipse (325,325,5,5);

fill (250,0,0);
ellipse (75,325,200,200);
fill (225,0,0);
ellipse (75,325,175,175);
fill (175,0,0);
ellipse (75,325,150,150);
fill (150,0,0);
ellipse (75,325,125,125);
fill (125,0,0);
ellipse (75,325,100,100);
fill (100,0,0);
ellipse (75,325,75,75);
fill (75,0,0);
ellipse (75,325,50,50);
fill (50,0,0);
ellipse (75,325,25,25);
fill (0,0,0);
ellipse (75,325,5,5);

fill (250,0,0);
ellipse (325,75,200,200);
fill (225,0,0);
ellipse (325,75,175,175);
fill (175,0,0);
ellipse (325,75,150,150);
fill (150,0,0);
ellipse (325,75,125,125);
fill (125,0,0);
ellipse (325,75,100,100);
fill (100,0,0);
ellipse (325,75,75,75);
fill (75,0,0);
ellipse (325,75,50,50);
fill (50,0,0);
ellipse (325,75,25,25);
fill (0,0,0);
ellipse (325,75,5,5);