Problem 432

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RishadanPort
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Joined: Mon Jun 10, 2013 7:31 am

Problem 432

Post by RishadanPort »

Hi

I am sure this has already been answered probably on here somewhere.. but I couldn't find it.

The statment: "Give the last 9 digits of your answer.'

Is it referring to the right most 9 digits of the answer?

That is what I am assuming it is.

Thanks
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Thierry
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Joined: Mon Apr 01, 2013 4:48 pm

Problem 432

Post by Thierry »

Can someone confirm the answer for N = 10^8 ends by ...263360 :D

Thanks. Thierry
ephermeral
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Joined: Mon Jun 24, 2013 12:47 pm

Re: Problem 432

Post by ephermeral »

Yeah...that seems right.
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RishadanPort
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Re: Problem 432

Post by RishadanPort »

Hi

I know I'm not suppose to ask for hints... but I only have 1 -- Do I really need to allocate ~12.5 gigabytes to solve this problem, or is there a better way.
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hk
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Re: Problem 432

Post by hk »

RishadanPort wrote: Thu Jul 25, 2019 7:10 am Hi

I know I'm not suppose to ask for hints... but I only have 1 -- Do I really need to allocate ~12.5 gigabytes to solve this problem, or is there a better way.
Of course there is a better way.
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RishadanPort
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Re: Problem 432

Post by RishadanPort »

I always get a bit confused when saying "last 9 digits"

Does last 9 digits mean left most digits or right most digits

Thanks
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rayfil
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Re: Problem 432

Post by rayfil »

Another way of saying "last 9 digits" would be mod(1,000,000,000).
When you assume something, you risk being wrong half the time.
LilStalker
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Re: Problem 432

Post by LilStalker »

rayfil wrote: Fri Jul 26, 2019 3:13 am Another way of saying "last 9 digits" would be mod(1,000,000,000).
In most cases yeah, but not always :D
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