program z1;
var a,b,i: integer;
begin
readln(a);
readln(b);
for i:=a to b do if i mod 2 =0 then write(i,' ')
end.
program z1;
var a,b,i: integer;
begin
readln(a);
readln(b);
for i:=a to b do if i mod 2 =0 then write(i,' ')
end.