Archive

East Central NA Regional

Contest Information

  • Date: Sunday, November 10, 2024
  • Final report: Coming soon
  • Final standings:  Link
  • Photos: (coming soon!)

Practice Contest

For this year’s practice contest, we used already existing problems available on Kattis.

Practice contest:  Link

Real Contest

Problem set:  problemset24_25.pdf

Links will download a .zip file with problem information (statement, test data, judges’ solutions).

A A Stack of Gold
B Average Substring Value
C Balancing Art
D Brownian Bears
E Fences Make Good Neighbors
F Leapfrog Encryption
G Letter Balloons
H Marching Orders
I Oooh I See
J Pascal Meets Boole
K Pony-less Express
L Repetitive Routes
M Smart Password Validation

Judges

East Central North America

  • John Bonomo (Westminster College)
  • Bob Roos (Allegheny College, retired)
  • Sean McCulloch (Ohio Wesleyan University)

Northeast North America

  • Finn Lidbetter
  • Liam Keliher
  • Arnav Sastry
  • Ivona Bezakova
  • Zack Butler

Greater New York

  • John Buck
  • Fred Pickel

Contest Information

  • Date: Saturday, October 21, 2023
  • Final report: Coming soon
  • Final standings:  Link
  • Photos: (coming soon!)

Practice Contest

For this year’s practice contest, we used already existing problems available on Kattis.

Practice contest:  Link

Real Contest

Problem set:  ecna2023-24.pdf

Links will download a .zip file with problem information (statement, test data, judges’ solutions).

A A Pivotal Question
B B Road Band
C Convex Hull Extension
D Cornhusker
E Prof. Fumblemore and the Collatz Conjecture
F Double Up
G Forest for the Trees
H Impartial Strings
I ISBN Conversion
J Pearls
K Split Decisions
L A (Fast) Walk in the Woods

Judges

East Central North America

  • John Bonomo (Westminster College)
  • Bob Roos (Allegheny College, retired)
  • Sean McCulloch (Ohio Wesleyan University)

Northeast North America

  • Finn Lidbetter
  • Liam Keliher
  • Shang-En Huang
  • Ivona Bezakova
  • Zack Butler

Greater New York

  • John Buck
  • Fred Pickel

Contest Information

  • Final report: PDF
  • Final standings:  Link
  • Photos: (coming soon!)

Practice Contest

For this year’s practice contest, we used already existing problems available on Kattis.

Practice contest:  Link

Real Contest

Problem set:  ecna2022-23.pdf

Links will download a .zip file with problem information (statement, test data, judges’ solutions).

A A-Mazing Puzzle
B A Musical Question
C Cribbage On Steroids
D Determining Nucleotide Assortments
E Hilbert’s Hedge Maze
F It’s About Time
G Pea Pattern
H Picking Up Steam
I Road To Savings
J Simple Solitaire
K Two Charts Become One
L Which Warehouse?

Judges

  • John Bonomo (Westminster College)
  • Bob Roos (Allegheny College, retired)
  • Sean McCulloch (Ohio Wesleyan University)
  • Bob Kramer (Youngstown State University)

Contest Information

  • Final report: PDF
  • Final standings:  Link
  • Photos: (coming soon!)

Practice Contest

Since the contest was held remotely, there was no practice contest this year.

We hope to resume practice contests when we return to in-person contests.

Real Contest

Problem set:  ecna2021.pdf

Links will download a .zip file with problem information (statement, test data, judges’ solutions).

A 1’s For All
B Abridged Reading
C Ball of Whacks
D Downsizing
E Gambling Game
F Growing Some Oobleck
G Noonerized Spumbers
H Numble
I Pinned Files
J Recycling
Problem test case:  Input   Answer
K Stable Table
L Statues
M Tomb Hater

Judges

  • John Bonomo (Westminster College)
  • Bob Roos (Allegheny College, retired)
  • Sean McCulloch (Ohio Wesleyan University)
  • Bob Kramer (Youngstown State University)

Contest Information

  • Final report: PDF
  • Final standings:  Link
  • Photos: (coming soon!)

Practice Contest

Since the contest was held remotely, there was no practice contest this year.

We hope to resume practice contests when we return to in-person contests.

Real Contest

Problem set:  ecna2020.pdf

Links will download a .zip file with problem information (statement, test data, judges’ solutions).

A All in the Family
B Kinky Word Searches
C Math Trade
D Oreperations Research
E Over the Hill, Part 1
F Over the Hill, Part 2
G A Rank Problem
H Restroom Monitor
I Scholar's Lawn
J Simply Sudoku
K Weighty Tomes
L Workers of the World Unite! Just Not Too Close

Judges

  • John Bonomo (Westminster College)
  • Bob Roos (Allegheny College, retired)
  • Sean McCulloch (Ohio Wesleyan University)
  • Bob Kramer (Youngstown State University)

Contest Information

  • Final report: PDF
  • Final standings:  Link
  • Photos: (coming soon!)

Practice Contest

Problem set:  prac2019.pdf

Links will download a .zip file with problem information (statement, test data, judges’ solutions).

A Chopping on Line
B Diamonds Are for Evers
C Flight Turbulence
D Hardware Sales
E Make America Grade Again
F This Problem's a Slam Dunk

Real Contest

Problem set:  ecna2019.pdf

Links will download a .zip file with problem information (statement, test data, judges’ solutions).

A Retribution!
B Bio Trip
C Cheese, If You Please
D Follow the Bouncing Ball
E Just Passing Through
F Musical Chairs
G Out of Sorts
H Remainder Reminder
I Square Rooms
J Taxed Editor
K Where Have You Bin?

Judges

  • John Bonomo (Westminster College)
  • Bob Roos (Allegheny College, retired)
  • Sean McCulloch (Ohio Wesleyan University)
  • Bob Kramer (Youngstown State University)