Problem 001

elendiastarman · Post by **elendiastarman** » Wed Sep 08, 2010 1:51 am

rae3012 wrote:Hello, I am a very new programmer, and I was told about the Euler site by a friend. Today is my first day to use Python, and I need some help regarding the code that I have. It seems like it would work from a logical standpoint, but I cannot get it to execute. If someone would be so kind as to offer their assistance via PM, I would greatly appreciate it.

I can help.

George_Morell · Post by **George_Morell** » Mon Nov 15, 2010 8:45 pm

Sorry

hk · Post by hk » Mon Nov 15, 2010 8:51 pm

@George_Morell
Please read forum rules.

[edit]
Thank you
[/edit]

WhiteSteel · Post by **WhiteSteel** » Wed Nov 17, 2010 4:38 pm

In my second day studying C++ and after a whole night without sleep...I finally solved it. TwT

I can't beleive it ·_· I had to re-study the concept of "multiple" to see the solution...
And it took me a couple of hours more to find the solution for the problem of repetition... ¬¬ the algorithm is not the most efficent... but I finally solved it!

rineez · Post by **rineez** » Mon Nov 22, 2010 9:38 am

I misunderstood the question first and was adding up including 1000.
After many hours and resubmitting the same wrong answer many times only did I notice that the problem was to find sum for all numbers below 1000.
Lesson 1 learned: The problem may be simple, but read the question carefully

rineez · Post by **rineez** » Mon Nov 22, 2010 9:48 am

Just for the sake of it, I generalized the problem and modified my code to find sum of all natural numbers that are multiples of 'a' or 'b' below some 'limit'.

These problems are kind of interesting, and I'm planning to use them for teaching programming languages.

Boreeas · Post by **Boreeas** » Fri Dec 10, 2010 1:48 am

Hmm, I seem to get the wrong answer, but I can't detect any error in my code. Any help, please?

Code: Select all

snip

rayfil · Post by **rayfil** » Fri Dec 10, 2010 2:05 am

@Boreeas
Sorry to have snipped your code.

However, we are absolutely certain that you can read. Please read again what is written in red and in large letters at the top of this thread.

This applies to EVERYBODY and to ALL threads on this open forum.

Boreeas · Post by **Boreeas** » Sat Dec 11, 2010 3:34 am

rayfil wrote:@Boreeas
Sorry to have snipped your code.

However, we are absolutely certain that you can read. Please read again what is written in red and in large letters at the top of this thread.

This applies to EVERYBODY and to ALL threads on this open forum.

<.< I'm sorry. I actually just saw that in the beginning of the thread people posting their code fragments and didn't care much about the red box, sind I thought "Oh well, they are posting code there, so it must be ok". Won't happen again, I promise.

hk · Post by hk » Sat Dec 11, 2010 10:13 am

All code snipped from previous posts in this topic.

tuchalia · Post by **tuchalia** » Mon Jan 03, 2011 9:05 pm

Hello to everyone, this is my first post here, and I'm having some trouble managing to get the code working, I seem to have some problems due to the fact that I'm using OSX, may I MP somebody to get some help?

For what I know, I can't post here the code, that's why I'm asking this. Anyway, this project seems quite a good thing to practice our programming/mathematical skills!!

Some key facts: Even declaring a variable as 0 and int, the memory adress just keeps the same value wich is a negative number, even when I declare it as an unsigned variable. Can you help me please?

Thanks for making this site!

TripleM · Post by **TripleM** » Mon Jan 03, 2011 9:27 pm

Sure.

tuchalia · Post by **tuchalia** » Mon Jan 03, 2011 10:03 pm

TripleM wrote:Sure.

Thanks for the help!

I'm writing this just to say that I quickly managed to get my code running, thanks to TripleM for the help, and to my rusty C to get it solved quickly!

rakantae · Post by **rakantae** » Wed Jan 05, 2011 12:43 am

Ahahaha. Stupid multiples got me as well. But I've defeated Problem 1.

sharkz · Post by **sharkz** » Thu Jan 13, 2011 9:34 pm

Hey there, having a bit of a problem with #1 : My algorithm works with 10 and 20 and so on but it says that my solution for below 1.000 is incorrect. Can someone give me an idea?

http://www.text-upload.com/read.php?id=40804&c=5573817

hk · Post by hk » Thu Jan 13, 2011 9:59 pm

In fact it doens't work for 20 either.
How often do think you count 15?

sharkz · Post by **sharkz** » Thu Jan 13, 2011 10:09 pm

two times, just checked it, one time for 15/3 and one time for 15/5

hk · Post by hk » Thu Jan 13, 2011 10:13 pm

Yep, but the statement is:

Find the sum of all the multiples of 3 or 5 below 1000.

So?

sharkz · Post by **sharkz** » Thu Jan 13, 2011 10:25 pm

hk wrote:Yep, but the statement is:
Find the sum of all the multiples of 3 or 5 below 1000.
So?

Wait - so i just have to count the multiples 3 and 5 share?

Jochen_P · Post by **Jochen_P** » Fri Jan 14, 2011 10:30 am

No, the problem description states that you need to sum them up .. another keyword is 3 or 5

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