Using offset in query_posts only for selected categories

I´m including two categories in my loop and triying to apply offset to just one this way:

<?php
  query_posts('cat=57,55&showposts=5&offset=1');
?>

//// My content 

<?php endwhile; ?>
<?php else : ?>
<?php endif; ?>

But i´m getting offset in both, it is possible to apply only for one category and show last 5 posts in the other one?