fill(250,0,0);
rect(-50,-50,8000,8000);
stroke(0,0,0);
line(100,100,200,200);
line(200,100,200,200);
line(250,100,250,200);
line(250,100,350,200);
line(400,100,400,200);
line(500,200,490,198);
line(490,198,480,197);
line(480,197,460,190);
line(460,190,450,185);
line(450,185,440,180);
line(440,180,430,170);
line(430,170,425,150);
line(425,150,430,130);
line(430,130,440,122);
line(440,122,450,115);
line(450,115,460,108);
line(460,108,480,103);
line(480,103,490,102);
line(490,102,500,100);
line(550,100,550,200);
line(600,100,600,200);
stroke(0,0,0);
fill(0,0,0);
triangle(100,300,375,300,375,550);
triangle(425,300,425,550,700,550);