The last round of TCO18, Marathon Round 4 CakeSharing started on August 1st and will run for a week. You can find it in the list of active contests.
I am the writer :-)
Upd. Due to the technical issues the round is extended by 24 hours, till August 9th.
The match begins in less than 5 hours from now! The winner of the round directly qualifies for the TCO18 finals to be held in Texas later this year!
TCO18 T-shirt
There are TCO18 t-shirts for top 150 competitors on Marathon Leaderboard after all the online rounds. If you make it to top 50 in this round — you will win a TCO18 T-shirt.
http://tco18.topcoder.com/marathon/leaderboard/
Hope to see most of you competing! :)