var x,y,a,b:real;
begin
	readln(x,y);
	a:=(x+y)/2;
	b:=2*x*y;
	if x<y then begin x:=a; y:=b; end
	else begin y:=a; x:=b; end;
	writeln(x);
	writeln(y);
end.



var x,y:integer;
begin
	readln(x);
	if x<5 then y:=130;
	if (x<=15)and(x>=5) then y:=180;
	if x>15 then y:=180+10*(x-15);
	writeln(y);
end.



var n,i:integer;
begin
	readln(n);
	i:=1;
	while(i<=n) do
	begin
		write(sqr(i),' ');
		i:=i+2;
	end;
end.