git mv *.hint -> README.md
There is one exception:
$ find . -name '*.hint' -execdir git mv '{}' README.md \;
git statufatal: destination exists, source=1992/albert/albert.hint, destination=1992/albert/README.md
Looking at the two files they differ quite a bit so I've not changed it.
I'll bring this up on GitHub.
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@@ -0,0 +1,235 @@
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Most Humorous Output:
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Andreas Gustafsson
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Helsinki University of Technology
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Arentikuja 1 D 305 (home address)
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00410 Helsinki
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FINLAND
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Judges' comments:
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To make:
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make ag
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Determine where your system dictionary is located. You may find
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it located in one of the following places:
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/usr/dict/words
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/usr/share/lib/spell/words
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/usr/ucblib/dict/words
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/dev/null <-- for machines with nothing to say
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Then using the proper dictionary:
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ag free software foundation < /usr/dict/words
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ag obfuscated c contest < /usr/dict/words
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ag unix international < /usr/dict/words
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ag george bush < /usr/dict/words
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ag bill clinton < /usr/dict/words
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ag ross perot < /usr/dict/words
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ag paul e tsongas < /usr/dict/words
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Recently some newspapers printed amusing anagrams of one of the
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names listed above. Run this program to find the anagrams they
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weren't allowed to print!
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Selected notes from the author:
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The name of the game:
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AG is short for either Anagram Generator or simply AnaGram.
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It might also be construed to mean Alphabet Game, and by pure
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coincidence it happens to be the author's initials.
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What it does:
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AG takes one or more words as arguments, and tries to find
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anagrams of those words, i.e. words or sentences containing
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exactly the same letters.
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How to use it:
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To run AG, you need a dictionary file consisting of distinct words
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in the natural language of your choice, one word on each line. If
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your machine doesn't have one already, you can make your own
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dictionary by concatenating a few hundred of your favourite Usenet
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articles and piping them through the following obfuscated shell
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script:
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#!/bin/sh
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z=a-z];tr [A-Z\] \[$z|sed s/[\^$z[\^$z*/_/g|tr _ \\012|grep ..|sort -u
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Using articles from alt.folklore.computers is likely to make
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a more professional-looking dictionary than rec.arts.erotica.
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AG must be run with the dictionary file as standard input.
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Because anagrams consisting of just a few words are generally more
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meaningful than those consisting of dozens of very short words, the
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number of words in the anagrams is limited to 3 by default. This
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limit can be changed using a numeric command line option, as in
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"ag -4 international obfuscated c code contest </usr/dict/words".
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Bugs:
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- There is no error checking
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- Standard input must be seekable, so you can't pipe the dictionary
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into AG.
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- The input sentence and each line in the dictionary may contain
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at most 32 distinct letters, and each letter may occur at most 15
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times.
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- Words in the dictionary may be at most 255 bytes long
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- AG cannot handle characters that sign-extend to negative values
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- Although AG works on both 16-bit and 32-bit machines,
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the size of the problems it can solve is severely limited
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on machines that limit the stack size to 64k or less.
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Obfuscatory notes:
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As you can see, AG takes advantage of the new '92 whitespace rules to
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achieve a clear, readable, self-documenting layout. The identifiers
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have been chosen in a way appropriate for an alphabet game, and common
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sources of bugs such as goto statements and malloc/free have been
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eliminated. As AG also refrains from abusing the preprocessor, it
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doesn't really have much to offer in terms of "surface obfuscation".
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Instead, it tries to achieve both its speed and its obscurity through a
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careful choice of algorithms. Some of the finer points of those
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algorithms are outlined in the rot-13 encoded spoiler below.
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How it works: (ROT13 to read)
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Urer sbyybjf n qrfpevcgvba bs fbzr bs gur qngn fgehpgherf naq
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nytbevguzf hfrq ol NT. Vg vf ol ab zrnaf pbzcyrgr, ohg vg znl uryc
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lbh trg na vqrn nobhg gur trareny cevapvcyrf.
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--
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Vagreanyyl, NT ercerfragf jbeqf naq fragraprf nf neenlf bs 32
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4-ovg vagrtre ryrzragf. Rnpu ryrzrag ercerfragf gur ahzore bs
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gvzrf n yrggre bpphef va gur jbeq/fragrapr. Gurer ner 32 ryrzragf
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orpnhfr 32 vf n pbairavrag cbjre bs gjb ynetre guna gur ahzore bs
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yrggref va zbfg jrfgrea nycunorgf, naq gur ryrzragf ner 4 ovgf
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rnpu orpnhfr gur fnzr yrggre vf hayvxryl gb bpphe zber guna 15
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gvzrf va n cenpgvpny nantenz trarengvba ceboyrz.
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Gurfr 32*4-ovg neenlf ner npghnyyl fgberq va zrzbel va n
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"ovg-genafcbfrq" sbezng, nf neenlf bs sbhe "ybat" inyhrf. Vg vf
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nffhzrq gung n "ybat" vf ng yrnfg 32 ovgf. Gur svefg 4-ovg yrggre
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pbhag vf sbezrq ol gur yrnfg fvtavsvpnag (2^0) ovg va rnpu bs gur
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sbhe ybatf, gur arkg bar vf sbezrq ol gur 2^1 ovgf, rgp.
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Guvf fgbentr sbezng znxrf vg cbffvoyr gb nqq be fhogenpg gjb fhpu
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irpgbef bs 32 4-ovg inyhrf va cnenyyry ol fvzhyngvat n frg bs 32
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ovanel shyy nqqref va fbsgjner hfvat ovgjvfr ybtvpny bcrengvbaf.
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R.t., nyy gur YFO:f bs gur erfhyg ner sbezrq va cnenyyry ol gnxvat
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gur rkpyhfvir BE bs gur YFO:f va rnpu fhzznaq, naq 32 pneel ovgf
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ner sbezrq va cnenyyry va n fvzvyne jnl hfvat n ybtvpny NAQ.
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Guhf, 32 vaqrcraqrag 4-ovg nqqvgvbaf pna or cresbezrq ol whfg sbhe
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vgrengvbaf bs n ybbc pbagnvavat fbzr 32-ovg ovgjvfr ybtvpny
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bcrengvbaf, ohg ab nevguzrgvp bcrengvbaf bgure guna gubfr vzcyvrq
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ol neenl vaqrkvat.
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Fhogenpgvba jbexf fvzvyneyl, naq va snpg NT bayl vzcyrzragf
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fhogenpgvba qverpgyl, unaqyvat nqqvgvba ol zrnaf bs gur vqragvgl
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n+o = n-(0-o).
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Va nqqvgvba gb guvf 32*4-ovg ercerfragngvba, NT nyfb sbezf n fb-pnyyrq
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"fvtangher" gung vf gur ovgjvfr BE bs gur sbhe ybatf, juvpu vf
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rdhvinyrag gb fnlvat gung gur fvtangher bs n jbeq pbagnvaf n ybtvpny 1
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va gur ovg cbfvgvbaf pbeerfcbaqvat gb yrggref bppheevat ng yrnfg bapr
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va gung jbeq.
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Gur svefg guvat NT qbrf vf gb pbafgehpg n ybbxhc gnoyr bs 256
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ybatf, bar sbe rnpu 8-ovg punenpgre inyhr. Gur ragel sbe n
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punenpgre jvyy or mreb vs gung punenpgre qbrfa'g nccrne va gur
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fragrapr tvira ba gur pbzznaq yvar, be vg jvyy unir n fvatyr ovg
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frg vs gur punenpgre qbrf nccrne va gur fragrapr. Ol nqqvat
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gbtrgure gur ovg znfxf sbe nyy gur yrggref va gur vachg fragrapr
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hfvat gur genafcbfr nqqvgvba zrgubq qrfpevorq nobir, NT sbezf gur
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32*4 ovg neenl ercerfragngvba bs gur vachg fragrapr.
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Gur arkg npgvba cresbezrq vf ernqvat gur qvpgvbanel. Gubfr jbeqf gung
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pbagnva yrggref abg va gur vachg fragrapr ner vzzrqvngryl qvfpneqrq.
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Jbeqf pbagnvavat gur evtug yrggref ohg va rkprffvir ahzoref ner
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ryvzvangrq va n frcnengr purpx vaibyivat gur 32*4 ovg neenl.
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Gur erznvavat jbeqf, juvpu jvyy or ersreerq gb nf "pnaqvqngr jbeqf",
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ner fgberq va 32*4-ovg ercerfragngvba, gbtrgure jvgu gurve fvtangherf
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naq bssfrgf vagb gur qvpgvbanel svyr fb gung gur cynva-grkg irefvba bs
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n jbeq pna yngre or sbhaq sbe cevagvat. Guvf vasbezngvba vf xrcg va n
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ybpny "fgehpg" va gur qvpgvbanel-ernqvat shapgvba, naq zrzbel vf
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nyybpngrq sbe rnpu pnaqvqngr jbeq fvzcyl ol znxvat nabgure erphefvir
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pnyy gb gung shapgvba.
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Rnpu fgehpg fb nyybpngrq vf yvaxrq vagb n svkrq-fvmr unfu gnoyr bs
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4096 ragevrf vaqrkrq ol gur 12 ybj ovgf bs gur jbeq'f fvtangher.
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Jura gur qvpgvbanel-ernqvat shapgvba rapbhagref raq-bs-svyr, nyy gur
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pnaqvqngr jbeqf unir orra fgberq va arfgrq npgvingvba erpbeqf ba gur
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fgnpx, npprffvoyr guebhtu gur unfu gnoyr.
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Trarengvat gur nantenzf vf gura qbar ol genirefvat gur unfu gnoyr naq
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fhogenpgvat gur yrggref bs rnpu jbeq va gur unfu gnoyr sebz gur
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"pheerag fragrapr", juvpu vavgvnyyl vf gur fragrapr tvira ba gur
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pbzznaq yvar.
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Gur fhogenpgvba vf cresbezrq va cnenyyry ba gur 4-ovg yrggre pbhagf
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nf qrfpevorq nobir, naq vs nyy 32 erfhygf ner mreb, na nantenz unf
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orra sbhaq. Vs gur erfhyg vf artngvir sbe bar be zber bs gur yrggref
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(nf vaqvpngrq ol bar be zber "1" va n irpgbe bs 32 obeebj ovgf
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erghearq ol gur fhogenpgvba ebhgvar), gur jbeq qvq abg zngpu gur
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pheerag fragrapr naq vf vtaberq. Svanyyl, vs gur erfhyg pbagnvarq
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bayl abaartngvir yrggre pbhagf, jr unir sbhaq n cnegvny nantenz:
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n jbeq pbagnvavat fbzr, ohg abg nyy, bs gur yrggref va gur pheerag
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fragrapr. Va guvf pnfr jr erphefviryl gel gb svaq na nantenz bs gur
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erznvavat yrggref. Gur qrcgu bs gur erphefvba vf yvzvgrq gb gur
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znkvzhz ahzore bs jbeqf va gur nantenz, nf fcrpvsvrq ol gur hfre.
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Jura gur qrrcrfg erphefvba yriry unf orra ernpurq, na bcgvzvmngvba pna
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or nccyvrq: orpnhfr ab shegure erphefvba jvyy or qbar, gurer vf ab
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arrq gb ybbx sbe cnegvny nantenzf, naq gurersber NT bayl arrqf gb
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purpx sbe jbeqf gung pbagnva rknpgyl gur fnzr yrggref nf gur pheerag
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fragrapr. Gubfr jbeqf pna or sbhaq fvzcyl ol vaqrkvat gur unfu gnoyr
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jvgu gur fvtangher bs gur pheerag fragrapr.
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Rira jura abg ba gur qrrcrfg erphefvba yriry, NT trarenyyl nibvqf
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rknzvavat nyy gur ragevrf bs gur unfu gnoyr. Gur vqrn vf gung jr ner
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abg vagrerfgrq va unfu ohpxrgf jubfr jbeqf pbagnva nal yrggref abg
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va gur pheerag fragrapr; gurfr ohpxrgf ner rknpgyl gubfr jubfr vaqrk
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unf n ybtvpny bar va n ovg cbfvgvba jurer gur fvtangher bs gur pheerag
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fragrapr unf n mreb. Chg nabgure jnl, jr jnag gb ybbc guebhtu bayl
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gubfr unfu ohpxrg vaqvprf "v" gung pbagnva mrebrf va nyy gur ovg
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cbfvgvbaf jurer gur fvtangher "f" bs gur pheerag fragrapr pbagnvaf
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n mreb; guvf pna or rkcerffrq va P nf (v & ~f == 0).
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Vg vf cbffvoyr gb ybbc guebhtu nyy fhpu ahzoref va na rssvpvrag jnl ol
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gnxvat nqinagntr bs pregnva cebcregvrf bs ovanel nevguzrgvp: ol
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sbepvat gur ovgf pbeerfcbaqvat gb mrebrf va "f" gb barf, jr pna znxr
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gur pneevrf trarengrq va vaperzragvat "v" cebcntngr fgenvtug npebff
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gubfr ovgf gung fubhyq erznva mreb. Sbe rknzcyr, gur sbyybjvat
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cebtenz cevagf nyy gubfr 16-ovg vagrtref gung pbagnva mrebrf va nyy
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rira ovg cbfvgvbaf:
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znva(){vag v=0,f=0kNNNN;qb{cevags("%04k\g",v);}juvyr(v=((v|~f)+1)&f);}
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NT hfrf n fvzvyne zrgubq ohg jbexf va gur bccbfvgr qverpgvba, svaqvat
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gur arkg ybjre inyhr jvgu mrebrf va tvira ovg cbfvgvbaf ol cebcntngvat
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obeebjf npebff gubfr ovgf. Fbzr nqqvgvbany nqwhfgzragf ner znqr
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gb gur unfu gnoyr vaqrk jura vavgvngvat n erphefvir frnepu, hfvat
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fvzvyne ovg-gjvqqyvat grpuavdhrf.
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Jurarire na nantenz unf orra sbhaq, vg vf cevagrq ol genirefvat n
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yvaxrq yvfg sbezrq ol fgehpgf va gur npgvingvba erpbeqf bs gur
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erphefvir vaibpngvbaf bs gur frnepu shapgvba, frrxvat gb gur ortvaavat
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bs gur jbeq zngpurq ol gung vaibpngvba, naq pbclvat gur punenpgref bs
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gur jbeq qverpgyl sebz fgnaqneq vachg gb fgnaqneq bhgchg.
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Copyright (c) 1992, Landon Curt Noll & Larry Bassel.
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All Rights Reserved. Permission for personal, educational or non-profit use is
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granted provided this this copyright and notice are included in its entirety
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and remains unaltered. All other uses must receive prior permission in writing
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from both Landon Curt Noll and Larry Bassel.
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