DecOct

MerickOWA · Post by **MerickOWA** » Fri Dec 12, 2008 4:40 pm

Was the 91 = 'Y' bug intensional?

tails · Post by **tails** » Fri Dec 12, 2008 5:26 pm

I think 91 = 'y' and 131 = 'Y'.

MerickOWA · Post by **MerickOWA** » Fri Dec 12, 2008 5:46 pm

I'm still confused as to how 91 = 'y' then

even if you treated the 91 as bad octal that makes it 72 in decimal which is 'H'. y is '171' in octal... so i'm not sure how or under what math '17' became a '9'

It almost threw me for a loop when I was decoding the message. With the mix of octal and decimal and the upper/lower characters then suddenly a '[', I thought I'd done something wrong or was on the wrong track.

tails · Post by **tails** » Fri Dec 12, 2008 6:42 pm

MerickOWA wrote:i'm not sure how or under what math '17' became a '9'

Hmm... I thought it was just a rule which we must detect. And maybe the expected answer to the first sentence is: "No, I wouldn't."

the_impaler · Post by **the_impaler** » Wed Dec 17, 2008 4:43 am

Yeah, it looks like it was intentional, unless it supposed to be 89

At one place there is 'Y' in octal (131), so not all 'Y' are miscalculated.

m!nus · Post by **m!nus** » Wed Dec 17, 2008 7:48 pm

How were you inteded to find 8=>16 9=>17? I just tried through alot of possibilities

the_impaler · Post by **the_impaler** » Thu Dec 18, 2008 12:46 am

I tried first slice the string in 3 chars array and then I saw that some are ok and some don't make sense. So I just manually split it into 3 or 2 char sequences and then if it has 8 or 9 it's dec otherwise it's octal. Most of it was decoded right away.

phoenix1204 · Post by **phoenix1204** » Sun Jul 19, 2009 9:34 am

The rule is maybe :
if value in [80...99] then value = value + 80
octdec(value)
Then there is no unwanted upper chars and no [

jonik555 · Post by **jonik555** » Sun Apr 04, 2010 5:06 pm

Oh I finally did it...
I tried a lot of nonsences but when I deleted all the eights from input and made groups of three octal digits, I got "If I ....(scrumbled text)... an efficien .... ... belie..." then i got lost, but finally I looked after belie I expected "ve" so I tried to somehow get that ... "v" finally I found, that every 8+ next number are decimal representations of letters

Final Y was very hard to me too, but I had solved it by looking to english dictionary where i found only one world starting with stropp

Uff... sorry for bad english.
Very nice and tricky challenge.

IIMOG · Post by **IIMOG** » Sun Nov 20, 2011 3:43 pm

Nice challenge, did it manually with the conversion panel of notepad++.

yes-man · Post by **yes-man** » Sun Apr 12, 2015 8:06 pm

is probably intentional to force people to solve the whole thing in order to notice :D
This way you cant just test the start and solve the end.

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