I saw no blog on TCO Round 1A in codeforces.
So here are the information :
EDIT : UPDATED INFORMATION
- Start time of the contest
- Registrations begins 3 hours prior to start time and closes 5 minutes before.
- Top 750 from this round will advance to round 2. There will 2 more rounds like this 1B and 1C.
- Registrations are limited to first 2500 participants only.
Lets discuss problems here once the contest is completely finished.
UPDATE — The editorial of this round has been released. link
Can't launch the applet :(
Same here. :(
looks like community.topcoder.com is not working. Also cannot connect.
topcoder.com is accessible but community sub domain is not.
at first I couldn't enter the room.
then after deciding to relaunch the applet, I couldn't as well.
simply disappointing.
What's your guesses on how this happened? My guess is severe DDOS.
It is back up now, I just got in.
Yes, I'm in too.
The round is delayed by 1 hour.
Updated time
EDIT:
I'm not sure if it will be delayed even more. There has been no updates from the admins...
Admin Broadcast:
Dear competitors! Unfortunately despite all our efforts we are not able to start today's round at 1 PM and we feel that postponing it further is not an option too. Therefore we decided to re-schedule the round to another date: April 12, at 12:00 UTC -4. TCO'14 Round 1B will be moved from April 12 to April 19 (the same time). SRM 617 will be moved from April 19 to another date which we will decide and announce as soon as possible. We sincerely apologize for the issues we had today! Please believe they are as disappointing to us as they may be to you (if not more).
How to solve 1000?
UPD Here is editorial of this round
I've reduced this problem to a game: for each switch the first player sets the type of it and the second player chooses if he'll use this switch. I've solved it using minimax, but my solution has failed systests. Seems that I have a minor bug.
UPD. In fact, my solution is completely incorrect.
Use only configurations NY, YN and YYY greedily (each of them by itself guarantees at least one lit lamp). I have no idea why it works though:)
i have a really cool
solution to the 250 problem: