East Central North America Region

The 2009 ACM-ICPC East Central North America
Regional Programming Contest

Final Report

The 2009 ACM-ICPC East Central North America Regional Programming Contest (ACM-ICPC ECNA RPC) was held on Saturday October 31, 2009. We had 115 teams drawn from 60 colleges and universities throughout western Pennsylvania, Ohio, Michigan, eastern Ontario, and Indiana (excluding the Greater Chicago Metropolitan Area). There was an additional 5 teams who had registered but did not participate and were canceled.

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: Cincinnati Site in Cincinnati, Ohio, USA (29 teams from 13 schools); McMaster Site in Hamilton, Ontario, Canada (22 teams from 13 schools); Michigan Site in Ann Arbor, Michigan, USA (22 teams from 11 schools); and Youngstown Site in Youngstown, Ohio, USA (42 teams from 23 schools).

We are pleased to report that the ECNA RPC was successful this year. Here are a few comments and observations:

1. One test case of Problem B violated the specs. Upon retesting, the following two highly significant changes in the initially annouced scoreboard were made:
   • Team Waterloo Black from the University of Waterloo has moved from Third Place to First Place.
   • Team Dragons from Carnegie-Mello University has moved from Fourth Place to Second Place.
   The final standings are shown below.
2. Version 9.1.3 of the PC^2 Contest Control System was used to run the Contest. There were no technical problems and the contest went very smooth.

3. The contest started at 10:08:00 EST and ended at 15:08:00 EST.

4. The contest consisted of 8 problems with 91 teams solving at least one problem.

5. The maximum number of problems solved was 8 problems.

6. Two teams were disqualified for violating the rule banning electronic devices during the contest.

7. You may view or download the Problem Sets and Judges' Solutions.

8. You may view the Final Standings.

Congratulations to the top 15 teams of The 2009 ECNA RPC:

Final Rank	Institute Name	Team Name	Number of Problems Solved	Total Time (in minutes)
1	University of Waterloo	Waterloo Black	8	833
2	Carnegie Mellon University	Dragons	8	918
3	Carnegie Mellon University	Tartans	8	1036
4	University of Michigan - Ann Arbor	Victors	8	1065
5	University of Waterloo	Waterloo Gold	6	791
6	York University	Gnu Yorkers	6	1025
7	Purdue University	Purdue Cheburashka	5	455
8	Cedarville University	Cedarville Gold	5	584
9	Ohio State University	Buckeye Alpha	5	729
10	Carnegie Mellon University	Cardinals	5	742
11	Grove City College	Bits && Bytes	5	771
12	University of Toronto	Toronto 1	4	515
13	University of Waterloo	Waterloo Red	4	672
14	Miami University	Miami Red	4	769
15	University of Michigan - Ann Arbor	Valiant	3	288