void setup () {
  size (500,500);
  background (0);
}

void draw () {
  noStroke ();
 fill (122,0,245);
 quad (250,0,500,0,500,480,250,480);
 
 noStroke ();
 fill (120);
 quad (230,210,500,210,500,240,250,240);
 
 stroke (0);
 strokeWeight (2); 
 line (250,10,500,10);
 line (250,20,500,20);
 line (250,30,500,30);
 line (250,40,500,40);
 line (250,50,500,50);
line (250,60,500,60);
line (250,70,500,70);
line (250,80,500,80);
 line (250,90,500,90);
 line (250,100,500,100);
 line (250,110,500,110);
 line (250,120,500,120);
line (250,130,500,130);
line (250,140,500,140);
 line (250,150,500,150);
 line (250,160,500,160);
 line (250,170,500,170);
 line (250,180,500,180);
 line (250,190,500,190);
line (250,200,500,200);
line (230,210,500,210);
line (230,220,500,220);
 line (230,230,500,230);
 line (250,240,500,240);
 line (250,250,500,250);
 line (250,260,500,260);
line (250,270,500,270);
line (250,280,500,280);
 line (250,290,500,290);
 line (250,300,500,300);
 line (250,310,500,310);
 line (250,320,500,320);
 line (250,330,500,330);
line (250,340,500,340);
line (250,350,500,350);
line (250,360,500,360);
 line (250,370,500,370);
 line (250,380,500,380);
 line (250,390,500,390);
 line (250,400,500,400);
line (250,410,500,410);
line (250,420,500,420);
 line (250,430,500,430);
 line (250,440,500,440);
 line (250,450,500,450);
 line (250,460,500,460);
 line (250,470,500,470);
 //fin de lineas horizontales
 
 line (280,0,280,10);
 line (310,0,310,10);
line (340,0,340,10);
line (370,0,370,10);
line (400,0,400,10);
line (430,0,430,10);
line (460,0,460,10);
line (490,0,490,10);

 line (280,20,280,30);
 line (310,20,310,30);
line (340,20,340,30);
line (370,20,370,30);
line (400,20,400,30);
line (430,20,430,30);
line (460,20,460,30);
line (490,20,490,30);

line (280,40,280,50);
line (310,40,310,50);
line (340,40,340,50);
line (370,40,370,50);
line (400,40,400,50);
line (430,40,430,50);
line (460,40,460,50);
line (490,40,490,50);

line (280,60,280,70);
line (310,60,310,70);
line (340,60,340,70);
line (370,60,370,70);
line (400,60,400,70);
line (430,60,430,70);
line (460,60,460,70);
line (490,60,490,70);

line (280,80,280,90);
line (310,80,310,90);
line (340,80,340,90);
line (370,80,370,90);
line (400,80,400,90);
line (430,80,430,90);
line (460,80,460,90);
line (490,80,490,90);

line (280,100,280,110);
line (310,100,310,110);
line (340,100,340,110);
line (370,100,370,110);
line (400,100,400,110);
line (430,100,430,110);
line (460,100,460,110);
line (490,100,490,110);

line (280,120,280,130);
line (310,120,310,130);
line (340,120,340,130);
line (370,120,370,130);
line (400,120,400,130);
line (430,120,430,130);
line (460,120,460,130);
line (490,120,490,130);

line (280,140,280,150);
line (310,140,310,150);
line (340,140,340,150);
line (370,140,370,150);
line (400,140,400,150);
line (430,140,430,150);
line (460,140,460,150);
line (490,140,490,150);

line (280,160,280,170);
line (310,160,310,170);
line (340,160,340,170);
line (370,160,370,170);
line (400,160,400,170);
line (430,160,430,170);
line (460,160,460,170);
line (490,160,490,170);

line (280,180,280,190);
line (310,180,310,190);
line (340,180,340,190);
line (370,180,370,190);
line (400,180,400,190);
line (430,180,430,190);
line (460,180,460,190);
line (490,180,490,190);

line (280,200,280,210);
line (310,200,310,210);
line (340,200,340,210);
line (370,200,370,210);
line (400,200,400,210);
line (430,200,430,210);
line (460,200,460,210);
line (490,200,490,210);

line (280,240,280,250);
line (310,240,310,250);
line (340,240,340,250);
line (370,240,370,250);
line (400,240,400,250);
line (430,240,430,250);
line (460,240,460,250);
line (490,240,490,250);

line (280,260,280,270);
line (310,260,310,270);
line (340,260,340,270);
line (370,260,370,270);
line (400,260,400,270);
line (430,260,430,270);
line (460,260,460,270);
line (490,260,490,270);

line (280,280,280,290);
line (310,280,310,290);
line (340,280,340,290);
line (370,280,370,290);
line (400,280,400,290);
line (430,280,430,290);
line (460,280,460,290);
line (490,280,490,290);

line (280,300,280,310);
line (310,300,310,310);
line (340,300,340,310);
line (370,300,370,310);
line (400,300,400,310);
line (430,300,430,310);
line (460,300,460,310);
line (490,300,490,310);

line (280,320,280,330);
line (310,320,310,330);
line (340,320,340,330);
line (370,320,370,330);
line (400,320,400,330);
line (430,320,430,330);
line (460,320,460,330);
line (490,320,490,330);

line (280,340,280,350);
line (310,340,310,350);
line (340,340,340,350);
line (370,340,370,350);
line (400,340,400,350);
line (430,340,430,350);
line (460,340,460,350);
line (490,340,490,350);

line (280,360,280,370);
line (310,360,310,370);
line (340,360,340,370);
line (370,360,370,370);
line (400,360,400,370);
line (430,360,430,370);
line (460,360,460,370);
line (490,360,490,370);

line (280,380,280,390);
line (310,380,310,390);
line (340,380,340,390);
line (370,380,370,390);
line (400,380,400,390);
line (430,380,430,390);
line (460,380,460,390);
line (490,380,490,390);

line (280,400,280,410);
line (310,400,310,410);
line (340,400,340,410);
line (370,400,370,410);
line (400,400,400,410);
line (430,400,430,410);
line (460,400,460,410);
line (490,400,490,410);

line (280,420,280,430);
line (310,420,310,430);
line (340,420,340,430);
line (370,420,370,430);
line (400,420,400,430);
line (430,420,430,430);
line (460,420,460,430);
line (490,420,490,430);

line (280,440,280,450);
line (310,440,310,450);
line (340,440,340,450);
line (370,440,370,450);
line (400,440,400,450);
line (430,440,430,450);
line (460,440,460,450);
line (490,440,490,450);

line (280,460,280,470);
line (310,460,310,470);
line (340,460,340,470);
line (370,460,370,470);
line (400,460,400,470);
line (430,460,430,470);
line (460,460,460,470);
line (490,460,490,470);

//fin de lineas verticales a

line (265,10,265,20);
line (295,10,295,20);
line (325,10,325,20);
line (355,10,355,20);
line (385,10,385,20);
line (415,10,415,20);
line (445,10,445,20);
line (475,10,475,20);

line (265,30,265,40);
line (295,30,295,40);
line (325,30,325,40);
line (355,30,355,40);
line (385,30,385,40);
line (415,30,415,40);
line (445,30,445,40);
line (475,30,475,40);


line (265,50,265,60);
line (295,50,295,60);
line (325,50,325,60);
line (355,50,355,60);
line (385,50,385,60);
line (415,50,415,60);
line (445,50,445,60);
line (475,50,475,60);

line (265,70,265,80);
line (295,70,295,80);
line (325,70,325,80);
line (355,70,355,80);
line (385,70,385,80);
line (415,70,415,80);
line (445,70,445,80);
line (475,70,475,80);

line (265,90,265,100);
line (295,90,295,100);
line (325,90,325,100);
line (355,90,355,100);
line (385,90,385,100);
line (415,90,415,100);
line (445,90,445,100);
line (475,90,475,100);

line (265,110,265,120);
line (295,110,295,120);
line (325,110,325,120);
line (355,110,355,120);
line (385,110,385,120);
line (415,110,415,120);
line (445,110,445,120);
line (475,110,475,120);


line (265,130,265,140);
line (295,130,295,140);
line (325,130,325,140);
line (355,130,355,140);
line (385,130,385,140);
line (415,130,415,140);
line (445,130,445,140);
line (475,130,475,140);

line (265,150,265,160);
line (295,150,295,160);
line (325,150,325,160);
line (355,150,355,160);
line (385,150,385,160);
line (415,150,415,160);
line (445,150,445,160);
line (475,150,475,160);

line (265,170,265,180);
line (295,170,295,180);
line (325,170,325,180);
line (355,170,355,180);
line (385,170,385,180);
line (415,170,415,180);
line (445,170,445,180);
line (475,170,475,180);
 
line (265,190,265,200);
line (295,190,295,200);
line (325,190,325,200);
line (355,190,355,200);
line (385,190,385,200);
line (415,190,415,200);
line (445,190,445,200);
line (475,190,475,200);

  
line (265,250,265,260);
line (295,250,295,260);
line (325,250,325,260);
line (355,250,355,260);
line (385,250,385,260);
line (415,250,415,260);
line (445,250,445,260);
line (475,250,475,260);

line (265,270,265,280);
line (295,270,295,280);
line (325,270,325,280);
line (355,270,355,280);
line (385,270,385,280);
line (415,270,415,280);
line (445,270,445,280);
line (475,270,475,280);

line (265,290,265,300);
line (295,290,295,300);
line (325,290,325,300);
line (355,290,355,300);
line (385,290,385,300);
line (415,290,415,300);
line (445,290,445,300);
line (475,290,475,300);

line (265,310,265,320);
line (295,310,295,320);
line (325,310,325,320);
line (355,310,355,320);
line (385,310,385,320);
line (415,310,415,320);
line (445,310,445,320);
line (475,310,475,320);

line (265,330,265,340);
line (295,330,295,340);
line (325,330,325,340);
line (355,330,355,340);
line (385,330,385,340);
line (415,330,415,340);
line (445,330,445,340);
line (475,330,475,340);

line (265,350,265,360);
line (295,350,295,360);
line (325,350,325,360);
line (355,350,355,360);
line (385,350,385,360);
line (415,350,415,360);
line (445,350,445,360);
line (475,350,475,360);

line (265,370,265,380);
line (295,370,295,380);
line (325,370,325,380);
line (355,370,355,380);
line (385,370,385,380);
line (415,370,415,380);
line (445,370,445,380);
line (475,370,475,380);
 
line (265,390,265,400);
line (295,390,295,400);
line (325,390,325,400);
line (355,390,355,400);
line (385,390,385,400);
line (415,390,415,400);
line (445,390,445,400);
line (475,390,475,400);

line (265,410,265,420);
line (295,410,295,420);
line (325,410,325,420);
line (355,410,355,420);
line (385,410,385,420);
line (415,410,415,420);
line (445,410,445,420);
line (475,410,475,420);

line (265,430,265,440);
line (295,430,295,440);
line (325,430,325,440);
line (355,430,355,440);
line (385,430,385,440);
line (415,430,415,440);
line (445,430,445,440);
line (475,430,475,440);

line (265,450,265,460);
line (295,450,295,460);
line (325,450,325,460);
line (355,450,355,460);
line (385,450,385,460);
line (415,450,415,460);
line (445,450,445,460);
line (475,450,475,460);

line (265,470,265,480);
line (295,470,295,480);
line (325,470,325,480);
line (355,470,355,480);
line (385,470,385,480);
line (415,470,415,480);
line (445,470,445,480);
line (475,470,475,480);
 
}