The document discusses using Lisp languages like Common Lisp, Clojure, and Scheme for competitive programming on websites like AtCoder. It introduces getac, a tool that runs Lisp code on sample inputs for debugging submissions to programming contests. Getac simplifies the testing process compared to directly running code. The document also lists additional competitive programming websites and provides a performance ranking of popular programming languages at AtCoder contests.

1. fukamachi
Lisp Meetup #83

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9. • AtCoder ( )
• TopCoder
• Codeforces

10. AtCoder

12. AtCoder
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• AtCoder Beginner Contest (ABC) 1
• AtCoder Grand Contest (AGC)
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13. Lisp

14. Lisp
• AtCoder
• Common Lisp (SBCL 1.1.14)
• Clojure 1.8.0
• Scheme (Gauche 0.9.3.3)

15. Lisp
• AtCoder
• Common Lisp (SBCL 1.1.14)
• Clojure 1.8.0
• Scheme (Gauche 0.9.3.3)
← 6
← 4
← 7.5

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20. AtCoder
https://qiita.com/knakajima3027/items/809be5abe5c3d9f29ee7
C++ >>> Python >> Java > C > Ruby

25. Welcome to AtCoder
https://atcoder.jp/contests/abs/tasks/practice_1

26. • AC
• WA
• RE
• TLE

27. • AC (Accepted)
• WA (Wrong Answer)
• RE (Runtime Error)
• TLE (Time Limit Exceeded)

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• diff

33. getac
https://github.com/fukamachi/getac

34. Before
$ cat input1.txt | ros run -- --script main.lisp

35. After
$ getac main.lisp

36. After
$ getac main.lisp

37. After
$ getac main.lisp

38. getac
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• diff
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39. getac
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• Common Lisp
• Clojure
• Scheme
• : C++, C, Java, Go, Python, Ruby, Node.js

40. https://github.com/fukamachi/getac
AtCoder Beginner Contest
12/22 ( ) 21:00