Var x,y:real;
begin
writeln('x=');
readln(x);
writeln('y=');
readln(y);
if (x<0) and (y<0)<br> then
writeln (abs(x), ' ',abs(y));
if (x<0) and (y>0) or (x>0) and (y<0)<br> then
writeln(2*x,' ', 2*y);
if (x>0) and (y=0) or (x=0) and (y>0) or (x>0) and (y>0)
then
writeln( sqrt(x),' ',sqrt(y));
readln;
end.