var
i,x,y:longint;
c:char;

begin
i:=0; x:=0;
while not EOF do 
	begin 
		inc(i); read(c); if c='x' then inc(x); 
	end;

y:=i-x;
if x>y  then for i:=1 to i-2*y do write('x')
		else for i:=1 to i-2*x do write('y');

end.