Contest

Welcome to the 13th International 24-hour Programming Contest!

Rules

The contest starts at 2012-04-27 09:00 CEST and ends at 2012-04-28 09:00 CEST.

No solution can be submitted after the 24 hour time is up.

Web server

General contest related information will be available on our web server at http://server.ch24.org/.

Submission site

The same submission system will be used as during the Electronic Contest. It will be available at http://server.ch24.org/sub/.

Task summary

There are various kinds of problems, with various scoring rules and submission methods. Here we provide a short summary:
Task Web submission Interactive Score decreases with time Penalty for wrong answer Time delay after fail/pass Scaling Max score
A
(Tower Defense)
Yes No Yes -5 0/0 No 1000
B
(Dissection)
Yes No No -5 0/120s Yes 1000
C
(Laser - Lines)
Yes No Yes -5 0/0 No 1000
D
(Laser - Cover)
Yes No Yes -5 0/0 No 1000
E
(Laser - Boxes)
Yes No No -5 0/120s Yes 1000
F
(Laser Hole in the Wall)
Yes Yes Yes 0 0/0 No 2500
G
(Sabotage)
Yes No Yes -5 0/0 No 1000
H
(Hatch)
Yes No Yes -5 0/0 No 1000
I
(Eye Practice)
Yes No No 0 0/0 Yes 0
J
(Eye For-Score)
Yes No No 0 0/0 Yes 1000
K
(Paper Boy - Delivery)
No Yes No 0 0/0 Yes 2500
L
(Paper Boy - Agility)
No Yes No 0 0/0 Yes 2500
M
(Dead-line)
Yes No No -5 0/120s Yes 1000
N
(Zombings)
No Yes No 0 0/0 Yes 3500

Note that the scorings of the Paper Boy and Zombings tasks have an hourly schedule, for details see the task descriptions.

Ports

Port TaskService descriptionConnection direction
server <-> team
80 - web
6667 - irc
u4242 - time server, UDP broadcast destination port
u123 - ntp server
u53 - dns server
u67,u68 - dhcp server
u10001 KL (Paper Boy)UDP bicycle telemetry
u10002 KL (Paper Boy)UDP video stream (mjpeg)
u10003 KL (Paper Boy)UDP control service
u20001 N (Zombings)UDP broadcast destination port
20002 N (Zombings)TCP control service

Ports starting with u are UDP ports.

The UDP destination ports should be opened by the teams (if they are interested in the information).

All other services are hosted on server.ch24.org.

Contact

General contest related information and data will be published on the web at http://server.ch24.org/.

Important announcements will be made on the #info irc channel and will be published on the web as well.

For general discussions and questions join the #challenge24 irc channel.

There will be separate channels for task related problems as well: #A, #B, #CDEF, #G, #H, #IJ, #KL, #M, #N.