Project Euler Forum

Adding autocomplete="off" to the CAPTCHA form field would be nice. Every time I go to start filling out the CAPTCHA, it gets blocked by the list of previously-typed-in CAPTCHAs. Kinda silly and trivia, but it has been bugging me.

Very sensible suggestion. Done.

Thank you! While I'm bothering you...

It looks like a lot of the "s in problem descriptions have been replaced with \" . Might this be the side effect of some data import/export issue with the migration to the new server? It isn't consistent, but it does make for a consistently funky-looking page, with broken images and the alt text (which is now /) displayed instead of the actual text.

I'm looking at Problem 64, as an example. I even went so far as to use wget to get it raw, and double check what I was seeing.
http://projecteuler.net/index.php?secti ... lems&id=64

Thank you once again.

It was caused due to an annoying default setting of PHP when installed on a new server (magic_quotes_gpc). Unfortunately two problems were edited before that particular flag was set to "off" and the consequence was that they inherited extra slashes. Anyway I've corrected the problems I could find, but if anyone else spots any other gremlins then please let me know.

Hello ProjectEuler Overlords,
I was wondering if it is possible to maintain a seperate rank list for each problem. For example you can just keep a table of the top 10(or 15) fastest solvers for each problem.

The reason for this is that I would like to know who is solving the recent PE problems. The recent PE problems are getting increasingly harder. I would suspect many of them are not 100%s since they would have come in late. I don't think this will cause a lot of increase in bandwidth or space. The overall ranking does not reflect much. I don't mind if you even scrap the current ranking system or reduce its update frequency.

I think the idea of all problems on ONE page, is good ! It helps me to save all the problems at once from wherever I am working and then work on the problems time and again, and when I have solved some, I check them later. It also helps me, because at times, I am done with a problem and due to power fluctuations I cannot access the net in my country, so having a saved copy lets me be occupied for a while !!

And regarding those, who spread the .pdf files associated with certain problems, I have this suggestion, if it is possible to allow the .pdf files to be opened in a browser, and do NOT allow them the right to save directly. It will STOP to some extent atleast the spread of answers !!

People want a better gauge on the difficulty level of problems. Perhaps provide the ratio between attempts and solutions, a long with the distribution?

That doesn't measure how difficult the problem is in the slightest. It measures how good people are at debugging code. The hardest problem probably has the fewest incorrect submissions.

balakrishnan_v wrote:Hello ProjectEuler Overlords,
I was wondering if it is possible to maintain a seperate rank list for each problem. For example you can just keep a table of the top 10(or 15) fastest solvers for each problem.

The reason for this is that I would like to know who is solving the recent PE problems. The recent PE problems are getting increasingly harder. I would suspect many of them are not 100%s since they would have come in late. I don't think this will cause a lot of increase in bandwidth or space. The overall ranking does not reflect much. I don't mind if you even scrap the current ranking system or reduce its update frequency.

Excellent suggestion Check out this topic (click here) for more information. Also, I think these fastest solvers list can be used to get an estimate of a problem's difficulty

I missed this thread and started a new topic by mistake, so I'm just going to repeat my request here.

I'm still slogging through a lot of the lower numbered questions, but occasionally like to jump up to one of the harder questions when I feel like a challenge. When doing this, I like to browse for a problem that is interesting/accessible. It would be nice to have "next" and "prev" buttons when viewing a single problem so that you can browse through the questions in order without having to go back to the problem page.

Not crucial, but a "nice to have" for us n00bs.

I've added buttons at the top of each problem page to go the previous/next problems. We've always got to give new things a bit of time, so let's wait to see if members are happy and feel that the usefulness in functionality outweighs any feelings about it being slightly cluttered.

If these buttons are permanent, one might consider colouring them green if the problem they point to is already solved, and grey else. Although this is mainly out of aesthetic considerations, imho it would also improve the usefulness of the buttons.

Done.

Just noted the following, as I'd accidentally closed my forum tab.

The other day, I'd temporarily changed my "Allow member contact" status in my profile to "No"; I have no qualms if people PM me on the board, but I prefer not to receive them from random members of the site. Nonetheless, knowing that the link to the forum was hidden away in the Contact section of the main PE website, I clicked there only to receive a surprising red "you can not contact anyone" message, I'm assuming is given to anyone who has contact set to "No" in their profile. In order to get back to the forum link I had to re-enable member contact in my profile.

Yes, there's a billion alternative methods I could use (yay bookmarks), but it seems kind of a wonky construct from a user-perspective standpoint.

Good point, quilan. I've changed the script so that the information about the preferred method of contact and link to this forum appears regardless of whether or not the member has "Allow Contact" enabled.

Will you have a function that automatically changes the upper limit of the problems ? I mean, for all problems(maybe exclude problem#1~ problem#100). Of course, the answer is also automatically updated.

I think the frequency should not be too high, maybe change once or twice per day. The changing time for each problem is unpredictable.

I don't know if it is technically doable? But it seems the best solution.

You should know why I propose this request.

A slight (but nonetheless annoying) problem here:

While using the Opera browser, what I can only assume to be spaces between mathematical notation, turns out as a rectangle rather than a blank space.

Some screenshots:
Opera:


Chrome:


Edit: I apologise for the huge whitespace. I guess it's MS Paint being, well, MS Paint.

And another thing (warning - pedantry ahead)...

When it says, for example "Problem 298 will be accessible in 1 minute (Fri 25 Jun 2010 at 9.00 pm [GMT])", it's actually 8.00PM GMT, and 9.00PM BST.

Yes, we know that. the problem is that the server keeps BST.

The_X wrote:A slight (but nonetheless annoying) problem here:

While using the Opera browser, what I can only assume to be spaces between mathematical notation, turns out as a rectangle rather than a blank space.

That's a "thin space" there ( & thinsp ; ), a standard html entity which should be correctly displayed by all browsers.
I can only conclude that there is something odd with your particular version of Opera / OS.