On Saturday, May 7th Topcoder Open returns to Saint-Petersburg, Russia! Event program includes:

• an onsite round of Algorithm Competition: an SRM-style competition with top-10 participants advancing to the online Wild Card Round on September 16, from which two winners go to TCO finals in undisclosed yet location (rules).
• T-shirts for all attendees :-)

If you want to participate, register.

Upd. List of registrants