PRogram Zif_4_12_D(input,output);
Var a,b,c,x,d:real;
Begin
     read(a,b,c);
     d:=b*b-4*a*c;
     if d<0 then write('no');
     if d=0 then
     begin
          x:=-b/(2*a);
          if x>0 then writeln(sqrt(x):0:5,',',-sqrt(x):0:5)
          else write('no');
     end;
     if d>0 then
     begin
          x:=(-b-sqrt(d))/(2*a);
          if x<0 then
          begin
               x:=(-b+sqrt(d))/(2*a);
               if x<0 then write('no')
               else write(sqrt(x):0:5,',',-sqrt(x):0:5)
          end
          else
          begin
               writeln(sqrt(x):0:5,',',-sqrt(x):0:5);
               x:=(-b+sqrt(d))/(2*a);
               writeln(sqrt(x):0:5,',',-sqrt(x):0:5)
          end
     end
end.