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2020/README.md

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+## 2020 marked the "The Twenty Seventh International Obfuscated C Code Contest"
+
+Copyright (C) 2020, Landon Curt Noll, Simon Cooper, and Leonid A.
+Broukhis. All Rights Reserved. Permission for personal, educational
+or non-profit use is granted provided this copyright and notice are
+included in its entirety and remains unaltered.  All other uses
+must receive prior permission from the contest judges.
+
+
+## Standard IOCCC stuff
+
+The primary IOCCC web site can be found at,
+
+>	<http://www.ioccc.org/>
+
+Use make to compile entries.  It is possible that on non-Un\*x / non-Linux
+systems the makefile needs to be changed.  See the Makefile for details.
+
+Look at the source and try to figure out what the programs do, and run
+them with various inputs.  If you want to, look at the hints files for
+spoilers - this year we included most of the information included
+by the submitter.
+
+Read over the makefile for compile/build issues.  Your system may require
+certain changes (add or remove a library, add or remove a #define).
+
+Some C compilers are not quite as good as they should be.  If yours is
+lacking, you may need to compile using clang or gcc instead of your local
+compiler.
+
+
+## Remarks on some of the winners
+
+This year's Best of Show (carlini) is such a novel way of obfuscation that it would be
+worth of a special mention in the (future) Best of IOCCC list!
+
+For some reason, this year's set of winners contains three nostalgic games,
+Asteroids (tsoj), Minesweeper (endoh1), and Snake (ferguson1).
+
+An entry (kurdyukov1) pays homage to a previous winner (2015/hou).
+
+...We'll stop spouting spoilers now. Have fun exploring all the entries!
+
+
+## Remarks on some of submissions that did not win
+
+As a rule, we try to compile the entries on a variety of platforms.
+Quite a few entries this year could not be built or executed on some of them due to reliance on
+library internals or the system runtime.
+
+A few entries were violating the "2053 significant bytes" rule. If an entry could not be brought to
+compliance within a few seconds of looking at the source, it was disqualified.
+
+One entry tried to get around the size limit by putting the code into
+makefile variables and using -D. This is already called out as discouraged
+technique in the guidelines, but it is worth a reminder.
+
+Several promising entries attempted to make use of the `syscall` function using literal syscall numbers.
+This is utterly non-portable.
+
+A note to the authors: when submitting multiple entries, don't let us easily correlate them by
+coding style or documentation content, and definitely don't submit nearly identical versions
+of your program separately. As we try to judge the entries anonymously, the similarities will cause such
+entries to compete against one another, making each less likely to win.
+
+We hope the authors of non-winning entries will refine their entries and
+perhaps re-submit them for the next IOCCC.
+
+## Final Comments
+
+One more thing that feels dated is digraphs and trigraphs.
+
+Please feel free to send us comments and suggestions about the
+competition, this README or anything else that you would like to see in
+future contests.
+
+If you use, distribute or publish these entries in some way, please drop
+us a line.  We enjoy seeing who, where and how the contest is used.
+
+If you have problems with any of the entries, AND YOU HAVE A FIX, please
+send us the fix (patch file or the entire changed file).
+
+For the latest information on how to contact the IOCCC Judges please visit
+
+>	<http://www.ioccc.org/contact.html>
+
+For news of the next contest watch:
+
+>	<http://www.ioccc.org/>
+
+-----------------------------------------------------------------------------------------------------
+(c) Copyright 1984-2020, [Leo Broukhis, Simon Cooper, Landon Curt Noll][judges] - All rights reserved
+This work is licensed under a [Creative Commons Attribution-ShareAlike 3.0 Unported License][cc].
+
+[judges]: http://www.ioccc.org/judges.html
+[cc]: http://creativecommons.org/licenses/by-sa/3.0/
+-----------------------------------------------------------------------------------------------------