East Central North America Region
The 2004 ACM East Central North America
November 6, 2004
Regional Programming Contest
The 2004 ACM East Central North America Regional Programming Contest
(ACM ECNA RPC) was held on Saturday November 6, 2004. We had 131 teams
drawn from 72 colleges and universities throughout western Pennsylvania,
Ohio, Michigan, eastern Ontario, and Indiana (excluding the Greater
Chicago Metropolitan Area).
As it was difficult for some teams in the ECNA region to travel to a
single site for the contest, the ECNA RPC was held as a distributed
contest. There were four contest sites: Ashland Site in Ashland, Ohio
(45 teams), Carnegie-Mellon Site in Pittsburgh, Pennsylvania (34 teams),
Cincinnati Site in Cincinnati, Ohio (25 teams), and Sheridan Site in Oakville,
Ontario, Canada (27 teams).
We are pleased to report that the ECNA RPC was again a success this year.
Here are a few comments and observations:
- Version 7.6 of the PC^2 Contest Control System was used to run the Contest.
This decision was made to avoid the technical difficulties we had last year with the
newer version of PC^2 and the reported problems with the newest version.
- The contest started at 10:25:52 EST instead of 10:00:00 EST as scheduled.
So, there was a 25 minute delay due to some problems with judges data files.
- At 11:46 EST, the submissions arriving from the Carnegie-Mellon Site started to
show a bogus time:
- According to the logs of the Judges, the first submission that arrived from the
Carnegie-Mellon Site showing a bogus time of 2 minutes was submission number 20.
This submission was from team Vikings I of Cleveland State University.
- The first scroeboard to show the bogus time/score was at 11:49:52 EST. Since
it contains the "2 minutes" submission of CSU's Vikings I, it was determined that
the clock malfunctioned at 01:21 Contest Time (after 81 minutes) which is equivalent
to 11:46 EST.
- Therefore, it was decided that all submissions that arrived from the
Carnegie-Mellon Site after 01:21 Contest Time and were marked correct needed to be
penalized 81 minutes per submission. Fortunately, this adjustment did not affect the
ranking of the top ten teams, at least.
- Around 13:05, the server at Ashland Site went down for about 30 minutes. It
came back up and then crashed again twice. The servers at the Carnegie-Mellon Site and
Sheridan Site crashed as well. As a result, the contest ended at 16:10:00 EST.
- The contest consisted of 8 problems with 119 teams solving at least one problem.
- The maximum number of problems solved was 8 problems.
- Here are some photos from the competition at
- You may view or download the
Problem Sets and Judges' Solutions.
- You may view the Final Standings
Congratulations to the top 10 teams of The 2004 ECNA RPC:
||Number of Problems Solved
||Total Time (in minutes)
|1||University of Waterloo||Waterloo Black
|2||University of Waterloo||Waterloo Gold
|3||University of Michigan - Ann Arbor||Victors
|4||University of Michigan - Ann Arbor||Valiant
|5||Carnegie Mellon University||Dragons
|6||Carnegie Mellon University||Cardinals
|7||University of Toronto||Toronto A
|8||University of Toronto||Toronto 1
|10||Miami University||Miami .EXE