This is like a guestbook.
You get to ask questions, share your opinion about something, give feedback to others.
Basically anything for the general public. If you have problem-specific question, you can post them on the problem page.

This is like a guestbook.

You get to ask questions, share your opinion about something, give feedback to others.

Basically anything for the general public. If you have problem-specific question, you can post them on the problem page.

It should work now.
Do you think it's worth it to implement problem ratings?
(It won't be much work for me, I just have to copypaste the comment rating code)
I could just take the "General" section out, and just move it to the PEG forums.

It should work now. Do you think it's worth it to implement problem ratings? (It won't be much work for me, I just have to copypaste the comment rating code)

I could just take the "General" section out, and just move it to the PEG forums.

Maybe we need to split these up into multiple pages, it's getting a bit annoying to scroll down - speaking of which, why not just put the newest comments at the top?
But either way, perhaps we should make this more like a forum and split it into threads? Though this is probably a lot of work, so it doesn't matter too much.

Maybe we need to split these up into multiple pages, it's getting a bit annoying to scroll down - speaking of which, why not just put the newest comments at the top?

But either way, perhaps we should make this more like a forum and split it into threads? Though this is probably a lot of work, so it doesn't matter too much.

I'm not sure if I agree with the "Problem Type" category.
Once you see the problem type, you can't help but narrow your mindset into thinking about it in terms of an end result. For example, if someone tells you a problem is DP, you will immediately try to break it into logical subproblems, even if you can't quite prove the optimal substructure.
As another example, if someone tells you the problem requires data structures, you might make a preemptive judgement to optimize it rather than see through the process why the solution requires a better data structure (as opposed to a better algorithm).
Another example... someone tells you the problem is greedy, so you go through the formula of sorting and stepping through locally optimal states, without fully proving why the global optimum is the sum of greedy choices.
I can think of other examples, and all of them limit the learning experience of the participant. You can

I'm not sure if I agree with the "Problem Type" category.

Once you see the problem type, you can't help but narrow your mindset into thinking about it in terms of an end result. For example, if someone tells you a problem is DP, you will immediately try to break it into logical subproblems, even if you can't quite prove the optimal substructure.

As another example, if someone tells you the problem requires data structures, you might make a preemptive judgement to optimize it rather than see through the process why the solution requires a better data structure (as opposed to a better algorithm).

Another example... someone tells you the problem is greedy, so you go through the formula of sorting and stepping through locally optimal states, without fully proving why the global optimum is the sum of greedy choices.

I can think of other examples, and all of them limit the learning experience of the participant. You can

(Post got cut off by character limit)
You can ignore the category, but even if someone accidentally glances at it, they can't help but start thinking about what they should do rather than why they should do it. And not only is that sometimes the hardest part of formulating the solution, but revealing that aspect destroys at least half of the problem solving process.

(Post got cut off by character limit)

You can ignore the category, but even if someone accidentally glances at it, they can't help but start thinking about what they should do rather than why they should do it. And not only is that sometimes the hardest part of formulating the solution, but revealing that aspect destroys at least half of the problem solving process.

So my suggestion is that you only categorize by vague problem types which can be *immediately* inferred from the problem statement.
Here is an example list of things that I think (in general) could be immediately inferred:
- Math
- Geometry
- Algebra
- Optimization
- Combinatorics
- Graph Theory (only in some circumstances)
- Logic
- Strings
- Puzzle Solving
- Searching
- Basic Programming
etc...
But things like "Dynamic Programming", "Greedy" and "Data Structures" are definitely bad indicators in my books.

So my suggestion is that you only categorize by vague problem types which can be *immediately* inferred from the problem statement.

Here is an example list of things that I think (in general) could be immediately inferred: - Math - Geometry - Algebra - Optimization - Combinatorics - Graph Theory (only in some circumstances) - Logic - Strings - Puzzle Solving - Searching - Basic Programming

etc...

But things like "Dynamic Programming", "Greedy" and "Data Structures" are definitely bad indicators in my books.

CCC programs are categorized for the purposes of classwork: when a topic is taught, this makes it easier to find problems for people to test their programs on.
But you're right, I think I'll declassify real contest problems and such.

CCC programs are categorized for the purposes of classwork: when a topic is taught, this makes it easier to find problems for people to test their programs on.

But you're right, I think I'll declassify real contest problems and such.

A search -->button<-- would be nice on the problems page, because if you just want to change the problem sorting order you have to go to the search box and press enter. It's a bit of a pain. Or maybe just make it so submits the form automatically once the sort order is changed or soemthing.

A search -->button<-- would be nice on the problems page, because if you just want to change the problem sorting order you have to go to the search box and press enter. It's a bit of a pain. Or maybe just make it so submits the form automatically once the sort order is changed or soemthing.

That's strange - it's already supposed to update automatically when you change an option. Do you have javascript disabled?
The checkmark idea is on my to-do list, I will work on that sometime. :)

That's strange - it's already supposed to update automatically when you change an option. Do you have javascript disabled?

The checkmark idea is on my to-do list, I will work on that sometime. :)

## Comments (Search)

Jokeron Nov 07, 2008 - 2:14:13 am UTC Where am i ?zerglingrushon Nov 07, 2008 - 3:11:57 am UTC Comments SectionYou get to ask questions, share your opinion about something, give feedback to others.

Basically anything for the general public. If you have problem-specific question, you can post them on the problem page.

Andrewon Nov 03, 2008 - 12:16:51 am UTC yahSourSpinachon Nov 02, 2008 - 11:16:23 pm UTC Rating commentsAnd I don't think user colours are necessary, we already have ranks.

hansonw1on Nov 02, 2008 - 11:26:36 pm UTC Rating CommentsDo you think it's worth it to implement problem ratings?

(It won't be much work for me, I just have to copypaste the comment rating code)

I could just take the "General" section out, and just move it to the PEG forums.

SourSpinachon Nov 02, 2008 - 11:17:57 pm UTC Too many commentsBut either way, perhaps we should make this more like a forum and split it into threads? Though this is probably a lot of work, so it doesn't matter too much.

hansonw1on Nov 02, 2008 - 10:22:56 pm UTC User colorsDrSaneon Oct 29, 2008 - 9:16:15 pm UTC I'm not sure if I completely agree...Once you see the problem type, you can't help but narrow your mindset into thinking about it in terms of an end result. For example, if someone tells you a problem is DP, you will immediately try to break it into logical subproblems, even if you can't quite prove the optimal substructure.

As another example, if someone tells you the problem requires data structures, you might make a preemptive judgement to optimize it rather than see through the process why the solution requires a better data structure (as opposed to a better algorithm).

Another example... someone tells you the problem is greedy, so you go through the formula of sorting and stepping through locally optimal states, without fully proving why the global optimum is the sum of greedy choices.

I can think of other examples, and all of them limit the learning experience of the participant. You can

DrSaneon Oct 29, 2008 - 9:19:42 pm UTC ...cont'dYou can ignore the category, but even if someone accidentally glances at it, they can't help but start thinking about what they should do rather than why they should do it. And not only is that sometimes the hardest part of formulating the solution, but revealing that aspect destroys at least half of the problem solving process.

DrSaneon Oct 29, 2008 - 9:30:52 pm UTC My SuggestionHere is an example list of things that I think (in general) could be immediately inferred:

- Math

- Geometry

- Algebra

- Optimization

- Combinatorics

- Graph Theory (only in some circumstances)

- Logic

- Strings

- Puzzle Solving

- Searching

- Basic Programming

etc...

But things like "Dynamic Programming", "Greedy" and "Data Structures" are definitely bad indicators in my books.

hansonw1on Oct 29, 2008 - 10:51:50 pm UTC Re: My SuggestionBut you're right, I think I'll declassify real contest problems and such.

bbi5291on Oct 30, 2008 - 2:55:33 pm UTC "Declassify"zerglingrushon Oct 29, 2008 - 2:37:24 am UTC NiceI just press view 50 or view 100 instead because it's way faster (and it shows all anyways)

dAedaLon Oct 29, 2008 - 3:21:33 am UTC ?zerglingrushon Oct 29, 2008 - 5:54:57 pm UTC NVMbleung91on Oct 29, 2008 - 5:04:59 am UTC 50 or 100 show all?qinhaotianon Oct 28, 2008 - 2:49:25 am UTC Suggestionzerglingrushon Oct 28, 2008 - 3:11:49 am UTC AgreedSaadimranon Oct 28, 2008 - 12:33:04 am UTC to adminadminon Oct 28, 2008 - 1:44:32 am UTC Search buttonThe checkmark idea is on my to-do list, I will work on that sometime. :)