Login [Register]
Don't have an account? Register now to chat, post, use our tools, and much more.
Cemetech Contest #15, Challenge 2
Published by KermMartian on December 22, 2015 at 12:51:24 AM CST | Discuss this article (70)

Last Tuesday, we announced Cemetech Contest #15: Crypto Golfing. This five-part contest tasks programmers with solving cryptography puzzles, then creating programs that can decode messages in the cipher used for each challenge. We received an overwhelming number of entries written in many different calculator and computer languages for Challenge 1. Since another Tuesday is upon us, Challenge 2 of Cemetech Contest #15 is also here! If you haven't completed Challenge 1 yet, you still have time, and the only thing you'll lose is the (up to) 5 bonus points you get by submitting your solutions quickly. Challenge 2 adds a few additional rules that we learned from seeing how people worked with Challenge 1:
  • For Challenges 2 and 3, TI-BASIC, Axe, and Assembly programs should take the ciphertext in Ans and return the decoded plaintext in Ans as well.
  • For Challenges 2 and 3, computer programs should take input from stdin and return output to stdout.
  • If there are any constants or keys that affect how a particular cipher works (for example, the offset in a Caesar cipher), these should be defined in a modifiable way in the source, so that someone with the source code could change those constants without needing to modify anything else in the program.


Good luck! And remember, a TI-Nspire CX and a TI-84 Plus C Silver Edition await the top two contestants.

Cemetech Contest #15 banner

December 2015 Articles
December 2015 December 2015 [Back to News Archives Index]

» ticalc.org POTY 2015 Starts published December 4, 2015 by pimathbrainiac
» Upgrading an N Scale P42 Model Train Locomotive published December 8, 2015 by KermMartian
» Projects of the Month: November 2015 published December 8, 2015 by tifreak8x
» Officially Announcing Doors CE 9, Coming Soon published December 10, 2015 by KermMartian
» Cemetech Contest #15: Crypto Golfing published December 15, 2015 by KermMartian
» Cemetech Contest #15, Challenge 2 published December 22, 2015 by KermMartian
» Happy Holidays from Cemetech! published December 25, 2015 by Alex
» Cemetech Contest #15, Challenge 3 published December 30, 2015 by KermMartian
» CEmu - A TI-84 Plus CE Emulator Released published December 31, 2015 by pimathbrainiac