var a,b,c:integer;
    x1,x2,d:real;
begin
writeln('Vvedite koefficienti uravneniya A,B,C');
readln(a,b,c);
if a=0 then writeln('uravnenie ne kvadratnoe') else
 begin
  d:=b*b-4*a*c;
  if d<0 then writeln('Net korney!')
  else if d=0 then
   begin
    x1:=-b/(2*a);
    writeln('x1=x2=',x1:0:2);
   end
 else if d>0 then
  begin
   x1:=(-b-sqrt(d))/(2*a);
   x2:=(-b+sqrt(d))/(2*a);
   writeln('x1=',x1:0:2,'  x2=',x2:0:2);
  end;
 end;
 end.