Ejercicio 2

void setup()

 {

   size(500,500);

   background(255, 255, 255);

   fill(255, 255, 255);

   strokeWeight(1);

   stroke(0, 0, 0);

   ellipse(250,250,500,500);

   fill(255, 255, 255);

   strokeWeight(1);

   stroke(0, 0, 0);

   ellipse(250,250,450,450);

   fill(0, 0, 0);

   strokeWeight(1);

   stroke(255,255, 255);

   ellipse(250,250,400,400);

   fill(0, 0, 0);

   strokeWeight(1);

   stroke(255,255, 255);

   ellipse(250,250,350,350);

   fill(0, 0, 255);

   strokeWeight(1);

   stroke(0,0, 0);

   ellipse(250,250,300,300);

   fill(0, 0, 255);

   strokeWeight(1);

   stroke(0,0, 0);

   ellipse(250,250,250,250);

   fill(255, 0, 0);

   strokeWeight(1);

   stroke(0,0, 0);

   ellipse(250,250,200,200);

   fill(255, 0, 0);

   strokeWeight(1);

   stroke(0,0, 0);

   ellipse(250,250,150,150);

   fill(255, 255, 0);

   strokeWeight(1);

   stroke(0,0, 0);

   ellipse(250,250,100,100);

   fill(255,255, 0);

   strokeWeight(1);

   stroke(0,0, 0);

   ellipse(250,250,50,50);

   fill(255, 255, 0);

   strokeWeight(1);

   stroke(0,0, 0);

   ellipse(250,250,25,25);

 }

void draw()

 {

 }