What types of tweets can a user participate with?

In photo contests, text-based contests, the participation can be integrated with Twitter.

It is possible to participate from a Twitter account by posting:

• A tweet containing text and the hashtag of the contest
• A tweet containing text, a photo and the hashtag of the contest
• A tweet containing a photo and the hashtag of the contest
• A tweet containing a text, a video, and the hashtag of the contest
• A tweet containing a video and the hashtag of the contest