routes - can i do this?

[eluser]MMCCQQ[/eluser]
hi!

i build a webapp . so i want this

i got Profile URL:
CASE 1
http://domain.com/mmccqq

and i got Other URL with Numbers:
CASE 2
http://domain.com/7879874

so i wanna do this too:

http://domain.com/mmccqq/add_comment
http://domain.com/7879874/photos

i got this:
CASE 1:
$route['(:any)'] = "main/index/$1";
CASE 2:
$route['(:num)'] = "v/index/$1";

its right?