I've talked about a problem from today's dress rehearsal in http://petr-mitrichev.blogspot.com/2012/05/world-finals-day-2-upe-dinner.html

Here's the first tough testcase for it: http://petr-mitrichev.blogspot.com/2012/05/power-towers-problem-testcase.html

Good luck! :)

http://petr-mitrichev.blogspot.com/2012/05/world-finals-day-2-upe-dinner.html

http://petr-mitrichev.blogspot.com/2012/05/world-finals-day-2-practice-session.html

http://petr-mitrichev.blogspot.com/2012/05/world-finals-2012-day-1-opening.html

http://petr-mitrichev.blogspot.com/2012/05/day-0-walk-through-warsaw-and.html

http://petr-mitrichev.blogspot.com/2012/05/on-pic-inside-sheremetyevo-airport-im.html

There's a live interview with me, tomek, Onufry Wojtaszczyk and Bartholomew Furrow in 25 minutes: https://plus.google.com/u/0/101571483150813305324/posts/DxaiBoikC8N

UPD. The interview is postponed, I'll write about new date and time :)

Before systest:

1. tomek, problems 1 and 2.
2. Petr, problems 1 and 2.
3. Jacob, problem 3.
4. romanandreev, problem 2.
5. ACRush, problem 2.
6. tomekkulczynski, problem 2.
7. jakubr, problem 2.
8. RAVEman, problem 2.
9. Somebody, problem 3.
10. gawry, problem 1.
11. hos.lyric, problem 1.
12. ilyakor, problem 2.
13. iwiwi, problem 3.
14. Po-Ru Loh, problem 1.
15. vepifanov, problem 2.
16. cerealguy, problem 1.
17. pparys, problem 1.
18. sdya, problem 1.

After systest:

1. romanandreev, problem 2.
2. tomek, problem 1.
3. ACRush, problem 2.
4. gawry, problem 1.
5. hos.lyric, problem 1.
6. Petr, problem 2.
7. cerealguy, problem 1.
8. pparys, problem 1.

Congrats romanandreev!

Preview: http://petr-mitrichev.blogspot.com/2011/09/topcoder-open-2011.html