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Commit 6d7560d3 authored by Andre Maroneze's avatar Andre Maroneze
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[ioccc] add 2020 IOCCC winners

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ioccc/.frama-c/path.mk 0 → 120000
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../../path.mk
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ioccc/.frama-c/stubs.c 0 → 100644
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// Stub for a main function which reads arguments from the command line, to be
// used by the Eva plug-in.
// This stub emulates non-deterministic input of up to 5 arguments, each up
// to 256 characters long. This is sufficient to ensure arbitrary input in
// virtually every case.
// Do not forget to add option '-main eva_main' in order to use this stub.
#ifdef __FRAMAC__
# include "__fc_builtin.h"
int main(int, char **);
static volatile int nondet;
int eva_main() {
int argc = Frama_C_interval(0, 5);
char argv0[256], argv1[256], argv2[256], argv3[256], argv4[256];
char *argv[6] = {argv0, argv1, argv2, argv3, argv4, 0};
//@ loop unroll 5;
for (int i = 0; i < 5; i++) {
Frama_C_make_unknown(argv[i], 255);
argv[i][255] = 0;
}
return main(argc, argv);
}
#endif // __FRAMAC__
ioccc/2020/MANIFEST 0 → 100644
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2020/MANIFEST
2020/Makefile
2020/README.text
2020/burton/Makefile
2020/burton/check.sh
2020/burton/check_be.sh
2020/burton/correct
2020/burton/hint.text
2020/burton/prog.c
2020/carlini/Makefile
2020/carlini/hint.text
2020/carlini/prog.c
2020/endoh1/Makefile
2020/endoh1/hilbert16x8.txt
2020/endoh1/hilbert2x2.txt
2020/endoh1/hilbert4x4.txt
2020/endoh1/hilbert8x8.txt
2020/endoh1/hint.text
2020/endoh1/ioccc.txt
2020/endoh1/megumin.txt
2020/endoh1/prog.c
2020/endoh1/prog.orig.c
2020/endoh1/unwinnable.txt
2020/endoh2/Makefile
2020/endoh2/bear.txt
2020/endoh2/hello.txt
2020/endoh2/hint.text
2020/endoh2/prog.c
2020/endoh2/spoiler.zip
2020/endoh2/yoda.txt
2020/endoh3/Makefile
2020/endoh3/hint.text
2020/endoh3/prog.alt.c
2020/endoh3/prog.c
2020/endoh3/run_clock.sh
2020/ferguson1/COMPILING
2020/ferguson1/HACKING
2020/ferguson1/Makefile
2020/ferguson1/bugs.text
2020/ferguson1/cake.jpg
2020/ferguson1/cannibalism.log
2020/ferguson1/chocolate-cake.text
2020/ferguson1/crazy.log
2020/ferguson1/gameplay.text
2020/ferguson1/halfwidth_vs_fullwidth.png
2020/ferguson1/hint.text
2020/ferguson1/ioccc-cake.jpg
2020/ferguson1/play.sh
2020/ferguson1/prog.2.c
2020/ferguson1/prog.3-j.c
2020/ferguson1/prog.3.c
2020/ferguson1/prog.alt.c
2020/ferguson1/prog.c
2020/ferguson1/snake-colours.sh
2020/ferguson1/snake.1
2020/ferguson1/spoilers.text
2020/ferguson1/termcaps.c
2020/ferguson1/terminals.text
2020/ferguson1/troubleshooting.text
2020/ferguson2/Makefile
2020/ferguson2/cake.jpg
2020/ferguson2/chocolate-cake.text
2020/ferguson2/enigma.1
2020/ferguson2/hint.text
2020/ferguson2/input.txt
2020/ferguson2/ioccc-cake.jpg
2020/ferguson2/obfuscation.key
2020/ferguson2/obfuscation.text
2020/ferguson2/obfuscation.txt
2020/ferguson2/prog.c
2020/ferguson2/recode.1
2020/ferguson2/recode.c
2020/ferguson2/recode.text
2020/ferguson2/try.this.txt
2020/giles/Makefile
2020/giles/dtmf.bin
2020/giles/hint.text
2020/giles/pi.wav
2020/giles/prog.c
2020/guidelines.txt
2020/iocccsize-test.sh
2020/iocccsize.c
2020/iocccsize.mk
2020/kurdyukov1/Makefile
2020/kurdyukov1/hint.text
2020/kurdyukov1/prog.c
2020/kurdyukov1/prog.extra.c
2020/kurdyukov1/prog.orig.c
2020/kurdyukov1/prog.x86.asm
2020/kurdyukov1/prog.x86_64.asm
2020/kurdyukov2/Makefile
2020/kurdyukov2/hint.text
2020/kurdyukov2/makegif.sh
2020/kurdyukov2/prog.c
2020/kurdyukov2/prog.png
2020/kurdyukov2/prog.png.c
2020/kurdyukov2/prog.ppm
2020/kurdyukov2/prog.ppm.c
2020/kurdyukov2/sample.jpg
2020/kurdyukov3/Makefile
2020/kurdyukov3/hint.text
2020/kurdyukov3/input.txt
2020/kurdyukov3/prog.c
2020/kurdyukov3/prog.extra.c
2020/kurdyukov3/prog.orig.c
2020/kurdyukov4/Makefile
2020/kurdyukov4/hint.text
2020/kurdyukov4/prog.c
2020/kurdyukov4/rand.c
2020/otterness/Makefile
2020/otterness/hint.text
2020/otterness/prog.c
2020/rules.txt
2020/tsoj/Makefile
2020/tsoj/hint.text
2020/tsoj/prog.c
2020/yang/Makefile
2020/yang/cppp.cc
2020/yang/hint.text
2020/yang/prog.c
ioccc/2020/Makefile 0 → 100644
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#!/usr/bin/env make
#
# 2020 makefile
#
# This work by Landon Curt Noll, Simon Cooper, and Leonid A. Broukhis
# is licensed under:
#
# Creative Commons Attribution-ShareAlike 3.0 Unported License.
#
# See: http://creativecommons.org/licenses/by-sa/3.0/
################
# tool locations
################
#
SHELL= /bin/bash
#
BUNZIP2= bunzip2
BZIP2= bzip2
CP= cp
CPP= cpp
CURL= curl
DD= dd
ECHO= echo
GREP= grep
GUNZIP= gunzip
GZIP_PROG= gzip
LD= ld
MAKE= make
MKDIR= mkdir
MV= mv
RM= rm
SED= sed
SORT= sort
STRIP= strip
TAR= tar
TR= tr
TRUE= true
UNIQ= uniq
# Set X11_LIBDIR to the directory where the X11 library resides
#
#X11_LIBDIR= /usr/X11R6/lib
#X11_LIBDIR= /usr/X11/lib
X11_LIBDIR= /opt/X11/lib
# Set X11_INCLUDEDIR to the directory where the X11 include files reside
#
#X11_INCDIR= /usr/X11R6/include
#X11_INCDIR= /usr/X11/include
X11_INCDIR= /opt/X11/include
# ANSI compiler
#
# Set CC to the name of your ANSI compiler.
#
CC= cc
###############
# IOCCC winners
###############
#
WINNERS= burton carlini endoh1 endoh2 endoh3 ferguson1 ferguson2 giles \
kurdyukov1 kurdyukov2 kurdyukov3 kurdyukov4 otterness tsoj yang
###################
# build all entries
###################
#
all:
@for i in ${WINNERS} ; do \
${ECHO} "(cd $$i && bear $(MAKE) X11_LIBDIR=${X11_LIBDIR} X11_INCDIR=${X11_INCDIR} $@)"; \
(cd $$i && bear $(MAKE) "X11_LIBDIR=${X11_LIBDIR}" "X11_INCDIR=${X11_INCDIR}" $@); \
done
# alternative executable
#
alt:
@for i in ${WINNERS} ; do \
${ECHO} "(cd $$i && bear $(MAKE) X11_LIBDIR=${X11_LIBDIR} X11_INCDIR=${X11_INCDIR} $@)"; \
(cd $$i && bear $(MAKE) "X11_LIBDIR=${X11_LIBDIR}" "X11_INCDIR=${X11_INCDIR}" $@); \
done
###############
# utility rules
###############
#
everything: all alt
clean:
@for i in ${WINNERS} ; do \
${ECHO} "(cd $$i && bear $(MAKE) $@)"; \
(cd $$i && $bear (MAKE) $@); \
done
clobber:
@for i in ${WINNERS} ; do \
${ECHO} "(cd $$i && bear $(MAKE) $@)"; \
(cd $$i && bear $(MAKE) $@); \
done
nuke: clobber
@for i in ${WINNERS} ; do \
${ECHO} "(cd $$i && bear $(MAKE) $@)"; \
(cd $$i && bear $(MAKE) $@); \
done
install:
@for i in ${WINNERS} ; do \
${ECHO} "(cd $$i && bear $(MAKE) $@)"; \
(cd $$i && bear $(MAKE) $@); \
done
##################
# 133t hacker rulz
##################
#
love:
@for i in ${WINNERS} ; do \
${ECHO} "(cd $$i && bear $(MAKE) $@)"; \
(cd $$i && bear $(MAKE) $@); \
done
haste:
@for i in ${WINNERS} ; do \
${ECHO} "(cd $$i && bear $(MAKE) $@)"; \
(cd $$i && bear $(MAKE) $@); \
done
waste:
@for i in ${WINNERS} ; do \
${ECHO} "(cd $$i && bear $(MAKE) $@)"; \
(cd $$i && bear $(MAKE) $@); \
done
make:
@for i in ${WINNERS} ; do \
${ECHO} "(cd $$i && bear $(MAKE) $@)"; \
(cd $$i && bear $(MAKE) $@); \
done
easter_egg:
@for i in ${WINNERS} ; do \
${ECHO} "(cd $$i && bear $(MAKE) $@)"; \
(cd $$i && bear $(MAKE) $@); \
done
fabricate fashion form frame manufacture produce:
@for i in ${WINNERS} ; do \
${ECHO} "(cd $$i && bear $(MAKE) $@)"; \
(cd $$i && bear $(MAKE) $@); \
done
sandwich:
@for i in ${WINNERS} ; do \
${ECHO} "(cd $$i && bear $(MAKE) $@)"; \
(cd $$i && bear $(MAKE) $@); \
done
# The IOCCC resident astronomer states
#
charon: supernova
@for i in ${WINNERS} ; do \
${ECHO} "(cd $$i && bear $(MAKE) $@)"; \
(cd $$i && bear $(MAKE) $@); \
done
pluto: supernova
@for i in ${WINNERS} ; do \
${ECHO} "(cd $$i && bear $(MAKE) $@)"; \
(cd $$i && bear $(MAKE) $@); \
done
ioccc/2020/README.text 0 → 100644
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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/
-----------------------------------------------------------------------------------------------------
ioccc/2020/burton/Makefile 0 → 100644
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#!/usr/bin/env make
#
# 2020 makefile
#
# This work by Landon Curt Noll, Simon Cooper, and Leonid A. Broukhis
# is licensed under:
#
# Creative Commons Attribution-ShareAlike 3.0 Unported License.
#
# See: http://creativecommons.org/licenses/by-sa/3.0/
#############################
# shell used by this Makefile
#############################
#
SHELL= /bin/bash
#######################
# common tool locations
#######################
#
A2P= a2p
AR= ar
ASA= asa
AT= at
ATQ= atq
ATRM= atrm
AWK= awk
BANNER= banner
BASE64= base64
BASENAME= basename
BATCH= batch
BC= bc
BINHEX= binhex
BISON= bison
BUNZIP2= bunzip2
BZCAT= bzcat
BZCMP= bzcmp
BZDIFF= bzdiff
BZEGREP= bzegrep
BZFGREP= bzfgrep
BZGREP= bzgrep
BZIP2= bzip2
BZLESS= bzless
BZMORE= bzmore
C2PH= c2ph
C89= c89
C99= c99
CAL= cal
CALC= calc
CAT= cat
CD= cd
CHFLAGS= chflags
CHGRP= chgrp
CHMOD= chmod
CKSUM= cksum
CLANG= clang
CLANG_PLUSPLUS= clang++
CLEAR= clear
CMP= cmp
COL= col
COLLDEF= colldef
COLRM= colrm
COLUMN= column
COMPRESS= compress
CP= cp
CPIO= cpio
CPP= cpp
CRC32= crc32
CSH= csh
CSPLIT= csplit
CURL= curl
CUT= cut
C_PLUSPLUS= c++
C_PLUSPLUS_FILT= c++filt
DATE= date
DC= dc
DD= dd
DF= df
DIFF3= diff3
DIFF= diff
DIG= dig
DIRNAME= dirname
ECHO= echo
ED= ed
EGREP= egrep
ENV= env
EQN= eqn
ETAGS= etags
EXPECT= expect
EXPR= expr
FALSE= false
FGREP= fgrep
FILE= file
FIND2PERL= find2perl
FIND= find
FLEX= flex
FLEX_PLUSPLUS= flex++
FMT= fmt
FOLD= fold
FS_USAGE= fs_usage
FUNZIP= funzip
FUSER= fuser
GCC= gcc
GDIFFMK= gdiffmk
GENCAT= gencat
GENSTRINGS= genstrings
GETOPT= getopt
GETOPTS= getopts
GINDENT= gindent
GNUMAKE= gnumake
GREP= grep
GROFF= groff
GROFFER= groffer
GROG= grog
GROPS= grops
GROTTY= grotty
GUNZIP= gunzip
GVIM= gvim
GZCAT= gzcat
GZEXE= gzexe
GZIP_PROG= gzip
G_PLUSPLUS= g++
H2PH= h2ph
H2XS= h2xs
HASH= hash
HEAD= head
HOSTNAME_PROG= hostname
ICONV= iconv
ID= id
INDENT= indent
INFO= info
JOT= jot
KILL= kill
KSH= ksh
LAST= last
LD= ld
LESSECHO= lessecho
LEX= len
LINK= link
LN= ln
LS= ls
M4= m4
MAKE= make
MAN= man
MKDIR= mkdir
MKFIFo= mkfifo
MKTEMP= mktemp
MV= mv
NANO= nano
NASM= nasm
NEQN= neqn
NICE= nice
NL= nl
NM= nm
NOHUP= nohup
NROFF= nroff
NSLOOKUP= nslookup
OD= od
OPENSSL= openssl
PASTE= paste
PATCH= patch
PATHCHK= pathchk
PAX= pax
PERL= perl
PICO= pico
PR= pr
PRINTENV= printenv
PS= ps
PTAR= ptar
PTARDIFF= ptardiff
PTARGREP= ptargrep
PWD= pwd
PYDOC= pydoc
PYTHON= python
PYTHONW= pythonw
READLINK= readlink
RENICE= renice
RESET= reset
REV= rev
RI= ri
RM= rm
RMDIR= rmdir
RSYNC= rsync
RUBY= ruby
RVIM= rvim
SAY= say
SCP= scp
SCREEN= screen
SCRIPT= script
SDIFF= sdiff
SED= sed
SEQ= seq
SFTP= sftp
SH= sh
SHA1= sha1
SHA= sha
SHAR= shar
SHASUM5_18= shasum5.18
SHASUM= shasum
SIZE= size
SLEEP= sleep
SORT= sort
SSH= ssh
STAT= stat
STRIP= strip
STTY= stty
SUM= sum
SYNC= sync
TABS= tabs
TAIL= tail
TAR= tar
TEE= tee
TEST= test
TFTP= tftp
TIDY= tidy
TIME= time
TOP= top
TOUCH= touch
TPUT= tout
TPUT= tput
TR= tr
TROFF= troff
TRUE= true
TSET= tset
TSORT= tsort
UL= ul
UNAME= uname
UNCOMPRESS= uncompress
UNEXPAND= unexpand
UNIFDEF= unifdef
UNIFDEFALL= unifdefall
UNIQ= uniq
UNITS= units
UNLINK= unlink
UNZIP= unzip
UNZIPSFX= unzipsfx
UPTIME= uptime
UUDECODE= uudecode
UUENCODE= uuencode
UUIDGEN= uuidgen
VI= vi
VIEW= view
VIM= vim
VIMDIFF= vimdiff
W= w
WAIT4PATH= wait4path
WAIT= wait
WC= wc
WHAT= what
WHATIS= whatis
WHICH= which
WHO= who
WHOAMI= whoami
WHOIS= whois
WRTIE= write
XAR= xar
XARGS= xargs
XATTR= xattr
XXD= xxd
YACC= yacc
YES= yes
ZCAT= zcat
ZCMP= zcmp
ZDIFF= zdiff
ZEGREP= zegrep
ZFGREP= zfgrep
ZFORCE= zforce
ZGREP= zgrep
ZIP= zip
ZIPCLOAK= zipcloak
ZIPGREp= zipgrep
ZIPINFo= zipinfo
ZIPNOTE= zipnote
ZIPSPLIT= zipsplit
ZLESS= zless
ZMORE= zmore
ZNEW= znew
ZPRINT= zprint
ZSH= zsh
# Set X11_LIBDIR to the directory where the X11 library resides
#
#X11_LIBDIR= /usr/X11R6/lib
#X11_LIBDIR= /usr/X11/lib
X11_LIBDIR= /opt/X11/lib
# Set X11_INCLUDEDIR to the directory where the X11 include files reside
#
#X11_INCDIR= /usr/X11R6/include
#X11_INCDIR= /usr/X11/include
X11_INCDIR= /opt/X11/include
# CWARN - Silence warnings that ${CWARN} would normally complain about
# CSILENCE -Compiler warnings
#
ifeq ($(CC),clang)
# clang CSILENCE and CWARN
#
CSILENCE=
#CSILENCE= -Wno-implicit-int
#
#CWARN= $CSILENCE}
#CWARN= -Wall $CSILENCE}
#CWARN= -Wall -Wextra $CSILENCE}
#CWARN= -Wall -Wextra -pedantic ${CSILENCE}
#CWARN= -Wall -Wextra -Weverything $CSILENCE}
CWARN= -Wall -Wextra -Weverything -pedantic ${CSILENCE}
else
ifeq ($(CC),gcc)
# gcc CSILENCE and CWARN
#
CSILENCE=
#CSILENCE= -Wno-implicit-int
#
#CWARN= $CSILENCE}
#CWARN= -Wall $CSILENCE}
#CWARN= -Wall -Wextra $CSILENCE}
CWARN= -Wall -Wextra -pedantic ${CSILENCE}
else
# default CSILENCE and WARN
#
CSILENCE=
#CSILENCE= -Wno-implicit-int
#
#CWARN= $CSILENCE}
#CWARN= -Wall $CSILENCE}
#CWARN= -Wall -Wextra $CSILENCE}
CWARN= -Wall -Wextra -pedantic ${CSILENCE}
#CWARN= -Wall -Wextra -Weverything $CSILENCE}
#CWARN= -Wall -Wextra -Weverything -pedantic ${CSILENCE}
endif
endif
# compiler standard
#
#CSTD=
#CSTD= -ansi
CSTD= -std=c11
# compiler bit architecture
#
# Some entries require 32-bitness:
# ARCH= -m32
#
# Some entries require 64-bitness:
# ARCH= -m64
#
# By default we assume nothing:
#
ARCH=
# defines that are needed to compile
#
CDEFINE=
#CDEFINE= -DIOCCC
# include files that are needed to compile
#
#CINCLUDE=
#CINCLUDE= -include stdlib.h
#CINCLUDE= -include stdio.h
CINCLUDE= -include stdlib.h -include stdio.h
#CINCLUDE= -I ${X11_INCDIR}
# optimization
#
# Most compiles will safely use -O2. Some can use only -O1 or -O.
# A few compilers have broken optimizers or this entry make break
# under those buggy optimizers and thus you may not want anything.
# Reasonable compilers will allow for -O3.
#
#OPT=
#OPT= -O
#OPT= -O1
#OPT= -O2
OPT= -O3
# default flags for ANSI C compilation
#
CFLAGS= ${CSTD} ${CWARN} ${ARCH} ${CDEFINE} ${CINCLUDE} ${OPT}
# Libraries needed to build
#
LIBS=
#LIBS= -L ${X11_LIBDIR}
# ANSI compiler
#
# Set CC to the name of your ANSI compiler.
#
# Some entries seem to need gcc. If you have gcc, set
# both CC and MAY_NEED_GCC to gcc.
#
# If you do not have gcc, set CC to the name of your ANSI compiler, and
# set MAY_NEED_GCC to either ${CC} (and hope for the best) or to just :
# to disable such programs.
#
CC= cc
#CC= clang
MAY_NEED_GCC= gcc
##############################
# Special flags for this entry
##############################
#
OBJ= prog.o prog_be.o
DATA= correct
TARGET= prog prog_be check check_be
#
ALT_OBJ= prog.orig.o
ALT_TARGET= prog.orig prog_be.orig
#
B=6945503773712347754LL
I=5859838231191962459LL
T=0
S=7
#
_B=7091606191627001958LL
_I=6006468689561538903LL
_T=1
_S=0
#################
# build the entry
#################
#
all: ${TARGET} ${DATA}
@${TRUE}
prog: prog.c
${CC} ${CFLAGS} -DB=${B} -DI=${I} -DT=${T} -DS=${S} $< -o $@ ${LIBS}
prog_be: prog.c
${CC} ${CFLAGS} -DB=${_B} -DI=${_I} -DT=${_T} -DS=${_S} $< -o $@ ${LIBS}
check: check.sh
@${RM} -f $@
${CP} -f $< $@
${CHMOD} +x $@
check_be: check_be.sh
@${RM} -f $@
${CP} -f $< $@
${CHMOD} +x $@
test: check check_be prog prog_be correct
./check ./prog | ${DIFF} -bw - correct
./check_be ./prog_be | ${DIFF} -bw - correct
# alternative executable
#
alt: ${ALT_TARGET}
@${TRUE}
prog.orig: prog.orig.c
${CC} ${CFLAGS} -DB=${B} -DI=${I} -DT=${T} -DS=${S} $< -o $@ ${LIBS}
prog_be.orig: prog.orig.c
${CC} ${CFLAGS} -DB=${_B} -DI=${_I} -DT=${_T} -DS=${_S} $< -o $@ ${LIBS}
# data files
#
data: ${DATA}
@${TRUE}
###############
# utility rules
###############
#
everything: all alt
clean:
${RM} -f ${OBJ} ${ALT_OBJ}
@-if [ -f indent.c ]; then \
${ECHO} ${RM} -f indent.c; \
${RM} -f indent.c; \
fi
clobber: clean
${RM} -f ${TARGET} ${ALT_TARGET}
@-if [ -e sandwich ]; then \
${RM} -f sandwich; \
${ECHO} 'ate sandwich'; \
fi
nuke: clobber
@${TRUE}
dist_clean: nuke
@${TRUE}
install:
@${ECHO} "Surely you are performing, Dr. Science!"
@${TRUE}
# backwards compatibility
#
build: all
@${TRUE}
# you may be able to mis-understand the source by reading indent.c
#
indent.c: prog.c
@if which "${GINDENT}" >/dev/null 2>&1; then \
${ECHO} ${RM} -f $@; \
${RM} -f $@; \
${ECHO} "${GINDENT} < $< > $@"; \
${GINDENT} < $< > $@; \
elif which "${INDENT}" >/dev/null 2>&1; then \
${ECHO} ${RM} -f $@; \
${RM} -f $@; \
${ECHO} "${INDENT} < $< > $@"; \
${INDENT} < $< > $@; \
else \
${ECHO} "no intent prog found, ident $< yourself, sorry"; \
${ECHO} "exit 1"; \
exit 1; \
fi
##################
# 133t hacker rulz
##################
#
love:
@${ECHO} 'not war?'
@${TRUE}
haste:
$(MAKE) waste
@${TRUE}
waste:
@${ECHO} 'haste'
@${TRUE}
make:
@${ECHO} 'We encourage you to attend a maker faire'
@${TRUE}
easter_egg:
@${ECHO} you expected to often mis-understand this $${RANDOM} magic
@${ECHO} chongo '<was here>' "/\\oo/\\"
@${ECHO} Eggy and Kitty
fabricate fashion form frame manufacture produce: make
@${TRUE}
sandwich:
@if [ `id -u` -eq 0 ]; then \
${ECHO} 'Okay.'; \
${ECHO} $${RANDOM}`date +%s`$${RANDOM} | \
${SHASUM} -a 512256 | \
${SED} -e 's/ .*//' > $@; \
else \
${ECHO} 'Reall?!? Make it yourself.'; \
exit 1; \
fi
# Understand the history of the Homebrew Computer Club
# as well as the West Coast Computer Faire and
# you might be confused different. :-)
#
supernova: nuke
@-if [ -r .code_anal ]; then \
${RM} -f .code_anal_v6; \
else \
${ECHO} "planet deniers, like a few silly IAU members, are so cute when they try to defend their logic"; \
fi
@${ECHO} A $@ helps ${MAKE} the elements that help form planets
@${TRUE}
deep_magic:
@-if [ -r .code_anal ]; then \
ccode_analysis --deep_magic 253d8c80830e2df66c018820004b3d4939821bbd7d781fc50d9e633797e44f65d1d62c707bb7e5a82c328a37bbf9ecb4c46fb56aa3f08641fcf45d10ba3c6081 --FNV1a_hash_512_bit "prog"; \
else \
${ECHO} "Wrong! Do it again!"; \
sleep 1; \
${ECHO} "Wrong! Do it again!"; \
sleep 1; \
${ECHO} "Wrong! Do it again!"; \
fi
@${TRUE}
magic: deep_magic
@-if [ -r .code_anal ]; then \
ccode_analysis --level 391581 --mode 216193 --state Riesel --FNV1a_hash_512_bit "prog"; \
else \
${ECHO} "If you don't eat yer meat, you can't have any pudding!"; \
${ECHO} "How can you have any pudding if you don't eat yer meat?!"; \
${ECHO} "p.s. Be cafeful with that axe, Eugene."; \
fi
@${TRUE}
# The IOCCC resident astronomer states
#
charon: supernova
@${ECHO} $@ is a dwarf planet
@${ECHO} dwarf is a type of planet
@${ECHO} therefore we continue to tell the IAU that $@ is a planet
pluto: supernova
${MAKE} charon
@${ECHO} $@ is a dwarf planet
@${ECHO} dwarf is a type of planet
@${ECHO} therefore, $@ is a planet
@${ECHO} having lots of planets is good feature because $< can help ${MAKE} a lot of them
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#!/bin/sh
prog="$1"
: ${prog:=./prog}
check_prog() {
/bin/echo -n "$1 "; $prog $1
}
seq 0 255 | while read a; do
check_prog "$a"
done | pr -t -w120 -8
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#!/bin/sh
prog="$1"
: ${prog:=prog_be}
check_code() {
/bin/echo -n "$1 "; $prog $1 | rev
}
seq 0 255 | while read a; do
check_code "$a"
done | pr -t -w120 -8
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[
{
"arguments": [
"cc",
"-c",
"-std=c11",
"-Wall",
"-Wextra",
"-pedantic",
"-include",
"stdlib.h",
"-include",
"stdio.h",
"-O3",
"-DB=6945503773712347754LL",
"-DI=5859838231191962459LL",
"-DT=0",
"-DS=7",
"-o",
"prog",
"prog.c"
],
"directory": ".",
"file": "prog.c"
}
]
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0 00000000 32 00100000 64 01000000 96 01100000 128 10000000 160 10100000 192 11000000 224 11100000
1 00000001 33 00100001 65 01000001 97 01100001 129 10000001 161 10100001 193 11000001 225 11100001
2 00000010 34 00100010 66 01000010 98 01100010 130 10000010 162 10100010 194 11000010 226 11100010
3 00000011 35 00100011 67 01000011 99 01100011 131 10000011 163 10100011 195 11000011 227 11100011
4 00000100 36 00100100 68 01000100 100 01100100 132 10000100 164 10100100 196 11000100 228 11100100
5 00000101 37 00100101 69 01000101 101 01100101 133 10000101 165 10100101 197 11000101 229 11100101
6 00000110 38 00100110 70 01000110 102 01100110 134 10000110 166 10100110 198 11000110 230 11100110
7 00000111 39 00100111 71 01000111 103 01100111 135 10000111 167 10100111 199 11000111 231 11100111
8 00001000 40 00101000 72 01001000 104 01101000 136 10001000 168 10101000 200 11001000 232 11101000
9 00001001 41 00101001 73 01001001 105 01101001 137 10001001 169 10101001 201 11001001 233 11101001
10 00001010 42 00101010 74 01001010 106 01101010 138 10001010 170 10101010 202 11001010 234 11101010
11 00001011 43 00101011 75 01001011 107 01101011 139 10001011 171 10101011 203 11001011 235 11101011
12 00001100 44 00101100 76 01001100 108 01101100 140 10001100 172 10101100 204 11001100 236 11101100
13 00001101 45 00101101 77 01001101 109 01101101 141 10001101 173 10101101 205 11001101 237 11101101
14 00001110 46 00101110 78 01001110 110 01101110 142 10001110 174 10101110 206 11001110 238 11101110
15 00001111 47 00101111 79 01001111 111 01101111 143 10001111 175 10101111 207 11001111 239 11101111
16 00010000 48 00110000 80 01010000 112 01110000 144 10010000 176 10110000 208 11010000 240 11110000
17 00010001 49 00110001 81 01010001 113 01110001 145 10010001 177 10110001 209 11010001 241 11110001
18 00010010 50 00110010 82 01010010 114 01110010 146 10010010 178 10110010 210 11010010 242 11110010
19 00010011 51 00110011 83 01010011 115 01110011 147 10010011 179 10110011 211 11010011 243 11110011
20 00010100 52 00110100 84 01010100 116 01110100 148 10010100 180 10110100 212 11010100 244 11110100
21 00010101 53 00110101 85 01010101 117 01110101 149 10010101 181 10110101 213 11010101 245 11110101
22 00010110 54 00110110 86 01010110 118 01110110 150 10010110 182 10110110 214 11010110 246 11110110
23 00010111 55 00110111 87 01010111 119 01110111 151 10010111 183 10110111 215 11010111 247 11110111
24 00011000 56 00111000 88 01011000 120 01111000 152 10011000 184 10111000 216 11011000 248 11111000
25 00011001 57 00111001 89 01011001 121 01111001 153 10011001 185 10111001 217 11011001 249 11111001
26 00011010 58 00111010 90 01011010 122 01111010 154 10011010 186 10111010 218 11011010 250 11111010
27 00011011 59 00111011 91 01011011 123 01111011 155 10011011 187 10111011 219 11011011 251 11111011
28 00011100 60 00111100 92 01011100 124 01111100 156 10011100 188 10111100 220 11011100 252 11111100
29 00011101 61 00111101 93 01011101 125 01111101 157 10011101 189 10111101 221 11011101 253 11111101
30 00011110 62 00111110 94 01011110 126 01111110 158 10011110 190 10111110 222 11011110 254 11111110
31 00011111 63 00111111 95 01011111 127 01111111 159 10011111 191 10111111 223 11011111 255 11111111
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# Best one-liner
Dave Burton
<http://snox.net/ioccc>
Twitter: @lv2jmp
The code for this entry can be found in prog.c
## Judges' comments:
### To use:
make
./prog
### Try:
./prog 128
./prog_be 128
./prog 170
./prog 85
### Selected Judges Remarks:
This tiny one-liner is a bit-twiddlers delight! It does all of the work
without looping.
To understand how it works, a good place to start is to look at the hex
value that results when the two magic constants are XOR'ed.
Once you've figured out what happens with one set of constants, how can
choosing new constants, but using the same computation generate a reversed
result?
## Author's comments:
Invoke this with a single non-negative integer less than 256, and a useful transformation occurs.
### Rule 2-ish
Exporting the constants B,I,T,S to the makefile allows the code
to be compiled for either LE (little-endian) or BE (big-endian) machines(!!),
so they are truly configuration parameters, not logic.
### Notes
One <strike>ping</strike> argument only. It will SEGV on zero arguments, and
display strange results if more than one argument.
Small, non-negative integers only. Useful range is 0 .. 511, sorta, for LE; 0 .. 255 for BE.
Bonus points if you can explain why the limits work this way.
ASCII character set, 64-bit long longs are required.
v,a,r,i,a,b,l,e,s_NAME the operation.
No loops, no branches?!?
### Compilation
Compiles cleanly under `clang -Wall -Weverything -pedantic`,
but you need to add `--include stdio.h --include stdlib.h` for the `printf`(3) and `atoi`(3).
On a little-endian machine:
clang -include stdio.h -include stdlib.h -Wall -Weverything -pedantic -DB=6945503773712347754LL -DI=5859838231191962459LL -DT=0 -DS=7 -o prog prog.c
On a big-endian machine:
clang -include stdio.h -include stdlib.h -Wall -Weverything -pedantic -DB=7091606191627001958LL -DI=6006468689561538903LL -DT=1 -DS=0 -o prog.be prog.c
You might be interested to compile it both ways on the same host, and try:
./prog 1; ./prog.be 1
-----------------------------------------------------------------------------------------------------
(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/
-----------------------------------------------------------------------------------------------------
ioccc/2020/burton/prog.c 0 → 100644
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int main(int b,char**i){long long n=B,a=I^n,r=(a/b&a)>>4,y=atoi(*++i),_=(((a^n/b)*(y>>T)|y>>S)&r)|(a^r);printf("%.8s\n",(char*)&_);}
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ioccc/2020/carlini/prog.c 0 → 100644
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#include <stdio.h>
#define N(a) "%"#a"$hhn"
#define O(a,b) "%10$"#a"d"N(b)
#define U "%10$.*37$d"
#define G(a) "%"#a"$s"
#define H(a,b) G(a)G(b)
#define T(a) a a
#define s(a) T(a)T(a)
#define A(a) s(a)T(a)a
#define n(a) A(a)a
#define D(a) n(a)A(a)
#define C(a) D(a)a
#define R C(C(N(12)G(12)))
#define o(a,b,c) C(H(a,a))D(G(a))C(H(b,b)G(b))n(G(b))O(32,c)R
#define SS O(78,55)R "\n\033[2J\n%26$s";
#define E(a,b,c,d) H(a,b)G(c)O(253,11)R G(11)O(255,11)R H(11,d)N(d)O(253,35)R
#define S(a,b) O(254,11)H(a,b)N(68)R G(68)O(255,68)N(12)H(12,68)G(67)N(67)
char* fmt = O(10,39)N(40)N(41)N(42)N(43)N(66)N(69)N(24)O(22,65)O(5,70)O(8,44)N(
45)N(46)N (47)N(48)N( 49)N( 50)N( 51)N(52)N(53 )O( 28,
54)O(5, 55) O(2, 56)O(3,57)O( 4,58 )O(13, 73)O(4,
71 )N( 72)O (20,59 )N(60)N(61)N( 62)N (63)N (64)R R
E(1,2, 3,13 )E(4, 5,6,13)E(7,8,9 ,13)E(1,4 ,7,13)E
(2,5,8, 13)E( 3,6,9,13)E(1,5, 9,13)E(3 ,5,7,13
)E(14,15, 16,23) E(17,18,19,23)E( 20, 21, 22,23)E
(14,17,20,23)E(15, 18,21,23)E(16,19, 22 ,23)E( 14, 18,
22,23)E(16,18,20, 23)R U O(255 ,38)R G ( 38)O( 255,36)
R H(13,23)O(255, 11)R H(11,36) O(254 ,36) R G( 36 ) O(
255,36)R S(1,14 )S(2,15)S(3, 16)S(4, 17 )S (5, 18)S(6,
19)S(7,20)S(8, 21)S(9 ,22)H(13,23 )H(36, 67 )N(11)R
G(11)""O(255, 25 )R s(C(G(11) ))n (G( 11) )G(
11)N(54)R C( "aa") s(A( G(25)))T (G(25))N (69)R o
(14,1,26)o( 15, 2, 27)o (16,3,28 )o( 17,4, 29)o(18
,5,30)o(19 ,6,31)o( 20,7,32)o (21,8,33)o (22 ,9,
34)n(C(U) )N( 68)R H( 36,13)G(23) N(11)R C(D( G(11)))
D(G(11))G(68)N(68)R G(68)O(49,35)R H(13,23)G(67)N(11)R C(H(11,11)G(
11))A(G(11))C(H(36,36)G(36))s(G(36))O(32,58)R C(D(G(36)))A(G(36))SS
#define arg d+6,d+8,d+10,d+12,d+14,d+16,d+18,d+20,d+22,0,d+46,d+52,d+48,d+24,d\
+26,d+28,d+30,d+32,d+34,d+36,d+38,d+40,d+50,(scanf(d+126,d+4),d+(6\
-2)+18*(1-d[2]%2)+d[4]*2),d,d+66,d+68,d+70, d+78,d+80,d+82,d+90,d+\
92,d+94,d+97,d+54,d[2],d+2,d+71,d+77,d+83,d+89,d+95,d+72,d+73,d+74\
,d+75,d+76,d+84,d+85,d+86,d+87,d+88,d+100,d+101,d+96,d+102,d+99,d+\
67,d+69,d+79,d+81,d+91,d+93,d+98,d+103,d+58,d+60,d+98,d+126,d+127,\
d+128,d+129
char d[538] = {1,0,10,0,10};
int main() {
while(*d) printf(fmt, arg);
}
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574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637
638 639 0 640 641 642 1 2 3 4 5 6 7 8 9 643 644 645 10 11 12 13 14 15 16 17 18 646 647 648 19 20 21 22 23 24 25 26 27 649 650 651 28 29 30 31 32 33 34 35 36 652 653 654 37 38 39 40 41 42 43 44 45 655
656 657 46 658 659 660 47 661 662 663 664 665 666 667 48 668 669 670 49 671 672 673 674 675 676 677 50 678 679 680 51 681 682 683 684 685 686 687 52 688 689 690 53 691 692 693 694 695 696 697 54 698 699 700 55 701 702 703 704 705 706 707 56 708
709 710 57 711 712 713 58 714 715 716 717 718 719 720 59 721 722 723 60 724 725 726 727 728 729 730 61 731 732 733 62 734 735 736 737 738 739 740 63 741 742 743 64 744 745 746 747 748 749 750 65 751 752 753 66 754 755 756 757 758 759 760 67 761
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1477 1478 1479 1480 1481 1482 313 1483 1484 1485 314 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 315 1497 1498 1499 316 1500 1501 1502 1503 1504 1505 1506 317 1507 1508 1509 318 1510 1511 1512 319 1513 1514 1515 320 1516 1517 1518 321 1519 1520 1521 322 1522 1523 1524 1525 1526 1527 1528 323 1529
1530 1531 1532 1533 1534 1535 324 1536 1537 1538 325 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 326 1550 1551 1552 327 1553 1554 1555 1556 1557 1558 1559 328 1560 1561 1562 329 1563 1564 1565 330 1566 1567 1568 331 1569 1570 1571 332 1572 1573 1574 333 1575 1576 1577 1578 1579 1580 1581 334 1582
1583 1584 335 336 337 338 339 1585 1586 1587 340 341 342 343 344 1588 1589 1590 345 346 347 348 349 1591 1592 1593 350 351 352 353 354 1594 1595 1596 355 1597 1598 1599 356 357 358 359 360 1600 1601 1602 361 1603 1604 1605 362 363 364 365 366 1606 1607 1608 367 368 369 370 371 1609
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1913 1914 453 1915 1916 1917 454 1918 1919 1920 455 1921 1922 1923 456 1924 1925 1926 457 1927 1928 1929 458 1930 1931 1932 459 1933 1934 1935 460 1936 1937 1938 1939 1940 1941 1942 461 1943 1944 1945 462 1946 1947 1948 1949 1950 1951 1952 463 1953 1954 1955 464 1956 1957 1958 1959 1960 1961 1962 465 1963
1964 1965 466 467 468 469 470 1966 1967 1968 471 472 473 474 475 1969 1970 1971 476 477 478 479 480 1972 1973 1974 481 482 483 484 485 1975 1976 1977 486 487 488 489 490 1978 1979 1980 491 492 493 494 495 496 497 498 499 1981 1982 1983 500 501 502 503 504 505 506 507 508 1984
1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 509 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047
ioccc/2020/endoh1/hilbert2x2.txt 0 → 100644
+ 9
− 0
View file @ 6d7560d3
8 8 13
13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28
29 30 0 31 32 33 1 34
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41 42 4 43 44 45 5 46
47 48 6 49 50 51 7 52
53 54 8 9 10 11 12 55
56 57 58 59 60 61 62 63
ioccc/2020/endoh1/hilbert4x4.txt 0 → 100644
+ 17
− 0
View file @ 6d7560d3
16 16 61
61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76
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93 94 0 95 96 97 1 2 3 4 5 6 7 8 9 98
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221 222 48 223 224 225 49 226 227 228 229 230 231 232 50 233
234 235 51 236 237 238 52 53 54 55 56 57 58 59 60 239
240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255
ioccc/2020/endoh1/hilbert8x8.txt 0 → 100644
+ 33
− 0
View file @ 6d7560d3
32 32 253
253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284
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992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023
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