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size(500,500);
background (255, 255, 255);
smooth();
fill(255, 255, 0);
noStroke();
arc(150, 150, 300, 300, 0, 2*PI);
smooth();
fill(255, 255, 255);
noStroke();
arc(150, 150, 310, 310, 0, PI/2);
smooth();
fill(0, 0, 0);
noStroke();
arc(150, 70, 50, 50, 0, 2*PI);
smooth();
fill(255, 255, 0);
noStroke();
arc(280, 260, 40, 40, 0, 2*PI);