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Merge pull request #291 from xexyl/2019-poikola

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Fixes in 2019/poikola
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Landon Curt Noll authored and GitHub committed 2023-04-06 21:10:57 -07:00
2 parents 2677607826 a4a50f9055
commit 63e578ec0d
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+54 -38
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2019/poikola/.gitignore
+1
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@@ -1 +1,2 @@
prog prog
poikola.pdf
2019/poikola/Makefile
+4 -1
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@@ -119,7 +119,7 @@ TARGET= ${PROG}
ALT_OBJ= ALT_OBJ=
ALT_TARGET= ALT_TARGET=
DOCS= poikola.tex
################# #################
# build the entry # build the entry
################# #################
@@ -144,6 +144,9 @@ alt: data ${ALT_TARGET}
data: ${DATA} data: ${DATA}
@${TRUE} @${TRUE}
docs: ${DOCS}
pdflatex ${DOCS}
# both all and alt # both all and alt
# #
everything: all alt everything: all alt
2019/poikola/README.md
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@@ -1,8 +1,8 @@
# Most calendrical # Most calendrical
Timo Poikola Timo Poikola
<https://ig.fi/other/ioccc> <https://ig.fi/other/ioccc>
Twitter: @timpoiko Twitter: @timpoiko
## To build: ## To build:
@@ -36,17 +36,20 @@ TZ=UTC48 make clobber prog
## Judges' comments: ## Judges' comments:
Do you have the time to see what this program does? Think again, come back and try again. Do you have the time to see what this program does? Think again, come back and
try again.
Note that 2 can be said to be the least odd prime because it is the greatest even prime. Note that 2 can be said to be the least odd prime because it is the greatest
Moreover 2 can be also said to be the greatest odd prime because it is the least even prime. even prime. Moreover 2 can be also said to be the greatest odd prime because it
is the least even prime.
The source code layout and some of the variable names honors the ski jumping accomplishments of The source code layout and some of the variable names honors the ski jumping
[Matti Nyk&auml;nen](https://en.wikipedia.org/wiki/Matti_Nyk%C3%A4nen). accomplishments of [Matti
Nyk&auml;nen](https://en.wikipedia.org/wiki/Matti_Nyk%C3%A4nen).
## Author's comments: ## Author's comments:
### How to build ### How to build:
```sh ```sh
gcc -O0 -o prog prog.c gcc -O0 -o prog prog.c
@@ -64,49 +67,58 @@ e.g.:
clang -O1 -o prog prog.c clang -O1 -o prog prog.c
``` ```
### Poster ### Poster:
You can generate an A3 sized poster by _make docs_. This command creates a pdf file _poikola.pdf_. You can generate an A3 sized poster by `make docs`. This command creates a pdf
file `poikola.pdf`.
### What this entry does ### What this entry does:
An old wise man mumbled to me: An old wise man mumbled to me:
>Implement a program, which can calculate SHA-3 checksum for a file > Implement a program, which can calculate SHA-3 checksum for a file
I think it is easy, but the wizard didn't stop yet: I think it is easy, but the wizard didn't stop yet:
>and primes and Fibonacci numbers.
> and primes and Fibonacci numbers.
Still easy. But the Gandalf the Grey impersonator is not ready: Still easy. But the Gandalf the Grey impersonator is not ready:
>But use only _main()_, and do not use _math.h_ nor predefined stuff at all. But wait, there are some more rules: This
work should reflect the extraordinary mind of Matti Nyk&auml;nen,
the all-time best [ski jumper](https://en.wikipedia.org/wiki/Matti_Nyk%C3%A4nen) and
[amateur philosopher](http://telefinn.blogspot.com/2011/11/matti-nykanen-quotes.html), who passed away on fourth of
February 2019.
### Oh boys. > But use only `main()`, and do not use `math.h` nor predefined stuff at all.
But wait, there are more rules: This work should reflect the extraordinary mind
of Matti Nyk&auml;nen, the all-time best [ski
jumper](https://en.wikipedia.org/wiki/Matti_Nyk%C3%A4nen) and [amateur
philosopher](http://telefinn.blogspot.com/2011/11/matti-nykanen-quotes.html),
who passed away on fourth of February 2019.
So, I followed the rules given by Gandalf the White and the Judges of IOCCC. Output of `iocccsize`, ### Oh boys:
using the [2019 version of iocccsize](https://www.ioccc.org/2019/iocccsize.c), is carefully selected.
For the sake of clarity, I used single letter variables in the code. I also avoided unnecessary use of functions.
Like a tripundra, this program has three levels. In order to reveal all of them, you have to compile this program
on three consecutive days.
As this is a contest for obfuscated code, the program does not perform unnecessary checks, but either fails or gets So, I followed the rules given by Gandalf the White and the Judges of IOCCC.
stuck if invoked erroneously. The program is invoked in this way: ./prog `<integer>` `<file>` in where `<integer>` is Output of `iocccsize`, using the [2019 version of
224, 256, 384, 512 or even 1024. Yes, I know 1024 is not a supported length of output, but as I said, the program does iocccsize](https://www.ioccc.org/2019/iocccsize.c), is carefully selected. For
not validate its input in any way. These same parameters should be given in calculating a Fibonacci sequence or prime the sake of clarity, I used single letter variables in the code. I also avoided
numbers. *Please note that maximum file size is one gigabyte.* unnecessary use of functions. Like a tripundra, this program has three levels.
In order to reveal all of them, you have to compile this program on three
consecutive days.
### Obfuscation As this is a contest for obfuscated code, the program does not perform
unnecessary checks, but either fails or gets stuck if invoked erroneously. The
program is invoked in this way: ./prog `<integer>` `<file>` in where `<integer>`
is 224, 256, 384, 512 or even 1024. Yes, I know 1024 is not a supported length
of output, but as I said, the program does not validate its input in any way.
These same parameters should be given in calculating a Fibonacci sequence or
prime numbers. *Please note that maximum file size is one gigabyte..
*Matti Nyk&auml;nen*: Every time I jump, and I get that feeling of _bon voyage_, the feeling that I&#8217;ve been here ### Obfuscation:
before.
*Matti Nyk&auml;nen*: When you are about to jump, you are all alone and have to make your own decisions. Up there, *Matti Nyk&auml;nen*: Every time I jump, and I get that feeling of _bon voyage_,
it's all _up yours_. the feeling that I've been here before.
This code has some jumping too. I used some `goto`s instead of `longjmp()`. Some Finnish ski jumping sites are *Matti Nyk&auml;nen*: When you are about to jump, you are all alone and have to
used as labels, however, there is `lahti` instead of <tt style="font-family: Monaco, Courier New, monospace;font-size: make your own decisions. Up there, it's all _up yours_.
This code has some jumping too. I used some `goto`s instead of `longjmp()`. Some
Finnish ski jumping sites are used as labels, however, there is `lahti` instead
of <tt style="font-family: Monaco, Courier New, monospace;font-size:
12px;">salpausselk&auml;</tt>. 12px;">salpausselk&auml;</tt>.
### SHA-3-512 Compatibility chart ### ### SHA-3-512 Compatibility chart ###