I'm the SRM 624's problem setter and I'm very glad to invite you all to participate. It's my first time as a topcoder problem setter, let's hope it's not the last :D
The contest is going to take part tomorrow (maybe today, it really depends on which part of the world you're right now): http://community.topcoder.com/tc?module=MatchDetails&rd=15857
Hope you guys have fun and enjoy it.
Wish you all good luck!
P.S: Let's discuss problems after the contest!
P.S2: Tomorrow is also the World Cup Opening, so we can discuss it here either! :D
**P.S3: Editorial (incomplete): http://apps.topcoder.com/forums/?module=Thread&threadID=821638&start=0&mc=1#1888704 **