Паскаль. заливка

Program Circle3;
Uses CRT, Graph;

const
R=185;

var
x0,y0,n,i,k,Color:integer;
driver,regim,error: integer;
a,b:word;
Info:FillSettingsType;
Begin
clrscr;
  Detectgraph(driver,regim);
Initgraph(driver,regim,'G:\TP7\BGI');
Error:=GraphResult;
if Error <> grOK then
begin
writeln(GraphErrorMsg(Error));
Halt(Error)
end;

GetAspectRatio(a,b);
x0:=GetMaxX div 2;
y0:=GetMaxY div 2;
SetAspectRatio(GetMaxX-a*x0 div 2,GetMaxY-b*y0);
SetLineStyle(0,0,3);
SetColor(LightGreen);
Circle(x0,y0,R);


Circle(420,225,190 div 2-9);

Circle(260,142,190 div 2-9);

Circle(280,353,190 div 2-9);


readln;
CloseGraph;
end.