## Search found 79 matches

- Sun May 21, 2017 5:05 pm
- Forum: Clarifications on Project Euler Problems
- Topic: Problem 333
- Replies:
**11** - Views:
**4422**

### Re: Problem 333

The answer I get for q < 10000 is (snip). Can anyone confirm?

- Sun Apr 02, 2017 2:12 pm
- Forum: Clarifications on Project Euler Problems
- Topic: Problem 510
- Replies:
**11** - Views:
**3520**

### Re: Problem 510

Thanks sjhillier...

EDIT: Solved! S(225) is an important data-point.

EDIT: Solved! S(225) is an important data-point.

- Sun Apr 02, 2017 12:11 pm
- Forum: Clarifications on Project Euler Problems
- Topic: Problem 510
- Replies:
**11** - Views:
**3520**

### Re: Problem 510

Can someone confirm S(225) = ?????.

- Sat Feb 11, 2017 11:01 am
- Forum: Clarifications on Project Euler Problems
- Topic: Problem 512
- Replies:
**2** - Views:
**1643**

### Re: Problem 512

With a simple trick you can bring down the memory requirement to less than 1GB. That was enough for me to solve the problem in under a minute. I am guessing there must be solutions that are faster and more memory efficient.

- Wed Jan 18, 2017 10:21 am
- Forum: Clarifications on Project Euler Problems
- Topic: Problem 549
- Replies:
**19** - Views:
**5680**

### Re: Problem 549

You can PM me.

- Sat Jan 14, 2017 3:28 am
- Forum: News, Suggestions, and FAQ
- Topic: Difficulty Ratings
- Replies:
**28** - Views:
**10826**

### Re: Difficulty Ratings

Thanks for introducing the difficulty field. I just sort the problems on the difficulty field and solve the easier one's first...

- Fri Jan 13, 2017 8:23 pm
- Forum: Clarifications on Project Euler Problems
- Topic: Problem 585
- Replies:
**4** - Views:
**1876**

### Problem 585

I am attempting to verify a conjecture via brute-force to help me solve this problem, I have no alternate ways of verifying this yet. So, can someone confirm that F(2000) = [

*number removed*]- Tue Jan 03, 2017 9:55 pm
- Forum: Clarifications on Project Euler Problems
- Topic: Problem 584
- Replies:
**9** - Views:
**3261**

### Re: Problem 584

I lost quite sometime debugging my simple brute-force code to match the examples given in the problem, while the real reason was that I had not considered the wrap-around issues. It was not apparent that you could cross years while counting days apart. A one-liner in the problem saying "In a year of...

- Tue Jan 03, 2017 2:52 pm
- Forum: Clarifications on Project Euler Problems
- Topic: Problem 584
- Replies:
**9** - Views:
**3261**

### Re: Problem 584

I think some might assume like me, that all birthdays belong to the same year, and, years should not be crossed. You are right that the birthdays are 1 day apart, but they belong to different years. In the same year, they are 364 days apart, in different years they are 1 day apart. It was not immedi...

- Tue Jan 03, 2017 2:39 pm
- Forum: Clarifications on Project Euler Problems
- Topic: Problem 584
- Replies:
**9** - Views:
**3261**

### Re: Problem 584

Could you add it to the problem statement that wrap-around possibilities must be considered? I found an article on the net which mentioned this, and so, I asked this question, otherwise, I would have never been able to guess that wrap-around possibilities should be considered.

- Tue Jan 03, 2017 1:54 pm
- Forum: Clarifications on Project Euler Problems
- Topic: Problem 584
- Replies:
**9** - Views:
**3261**

### Re: Problem 584

Have another question. Let the year length be 5 days. If I want to get birthdays that are 1 day apart, are they just {(1,2), (2, 3), (3, 4), (4,5)} or should we also count (5,1) (day 5 of previous year and day 1 of the current year)?

- Wed Dec 28, 2016 3:59 am
- Forum: Recreational
- Topic: dynamic programming :)
- Replies:
**1** - Views:
**6804**

### Re: dynamic programming :)

Nice link.

- Wed Dec 28, 2016 2:11 am
- Forum: Recreational
- Topic: why don't solver annotate their solutions?
- Replies:
**8** - Views:
**8135**

### Re: why don't solver annotate their solutions?

I think solvers don't annotate their code, because, once the code gives the correct answer, they are done. There is no need to do any maintenance on the code. Also, the code is mostly for personal use only. That being said, I have seen some pretty well documented code in the solutions forum.

- Tue Dec 27, 2016 6:10 am
- Forum: News, Suggestions, and FAQ
- Topic: Problem difficulty cycle?
- Replies:
**3** - Views:
**1294**

### Re: Problem difficulty cycle?

Thanks for the clarifications.

- Sun Dec 25, 2016 5:05 am
- Forum: News, Suggestions, and FAQ
- Topic: Problem difficulty cycle?
- Replies:
**3** - Views:
**1294**

### Problem difficulty cycle?

Euler wrote: POLITE REQUEST (Sat 22 Dec 07) It is now the intention of the Project Euler team to rotate the difficulty of new problems through an easy-medium-hard-medium- cycle. As the background of members differs significantly, seasoned programmers may find some "hard" problems not too challengin...

- Tue Dec 20, 2016 10:17 pm
- Forum: Clarifications on Project Euler Problems
- Topic: Problem 575
- Replies:
**17** - Views:
**3253**

### Re: Problem 575

Thanks hk, I might have found an alternate way to solve this problem. I won't know for sure until I implement the solution. In the meantime, can someone verify the answer for a 50 x 50 grid is 0.018991621039. EDIT: Done, after someone pointed to me a well known fact about random walks on undirected ...

- Tue Dec 20, 2016 7:44 am
- Forum: Clarifications on Project Euler Problems
- Topic: Problem 575
- Replies:
**17** - Views:
**3253**

### Re: Problem 575

I am able to get the same answer as the example provided in the problem for a 5 x 5 square grid. Hopefully, I am not giving anything away, but, I had to write a sparse matrix gaussian elimination solver to get the answer. Unfortunately, my sparse matrix solver doesn't scale to a 1000 x 1000 grid. Is...

- Wed Oct 05, 2016 3:40 am
- Forum: Clarifications on Project Euler Problems
- Topic: Problem 169
- Replies:
**17** - Views:
**7130**

### Re: Problem 169

Can somebody confirm f(10 ^ 14) = 5946265?

Thanks

Thanks

- Mon Oct 03, 2016 3:10 pm
- Forum: Clarifications on Project Euler Problems
- Topic: Problem 167
- Replies:
**32** - Views:
**10362**

### Re: Problem 167

I get the same values. The values are correct.