## Search found 165 matches

- Fri May 22, 2020 8:51 pm
- Forum: Clarifications on Project Euler Problems
- Topic: Problem 059
- Replies:
**111** - Views:
**28030**

### Re: Problem 059

Can you tell me if my understanding of the problem is correct? Consider the following example: Suppose the original plain text was "HELLO WORLD", and the encryption key I chose was "97, 98, 99", which are the ascii values for a, b, c, respectively. To encrypt the plain text "HELLO WORLD", I would t...

- Fri May 22, 2020 3:01 am
- Forum: Clarifications on Project Euler Problems
- Topic: Problem 320
- Replies:
**8** - Views:
**2509**

### Re: Problem 320

I seem to be having an issue on this problem. I'm getting the correct answer for S(1000), but my answer is not being accepted for S(1,000,000). I've double and triple-checked my constants and created 3 extra loops to verify values used to calculate N(1,000,000). All 3 loops cleared without reporting...

- Fri May 15, 2020 1:35 am
- Forum: News, Suggestions, and FAQ
- Topic: Errors/Warnings/Bugs
- Replies:
**539** - Views:
**122827**

### Re: Errors/Warnings/Bugs

Site's been down a lot today. Keeping this brief in case...

- Tue Apr 28, 2020 8:19 pm
- Forum: News, Suggestions, and FAQ
- Topic: Errors/Warnings/Bugs
- Replies:
**539** - Views:
**122827**

### Re: Errors/Warnings/Bugs

I appear to be unable to delete private messages. I mark 2 of them, select "Delete marked" and click "Go". I get a message saying "The submitted form was invalid. Try submitting again."

- Mon Apr 27, 2020 7:18 am
- Forum: Clarifications on Project Euler Problems
- Topic: Problem 713
- Replies:
**12** - Views:
**837**

### Re: Problem 713

From https://en.wikipedia.org/wiki/Series_and_parallel_circuits In a series circuit, every device must function for the circuit to be complete. If one bulb burns out in a series circuit, the entire circuit is broken. From this problem: The electrical system uses two fuses in series,... For the heati...

- Mon Apr 27, 2020 6:13 am
- Forum: Clarifications on Project Euler Problems
- Topic: Problem 713
- Replies:
**12** - Views:
**837**

### Re: Problem 713

I believe the N fuses are replacements. The only circuit has 2 fuses in series. Choose 2 replacements and, if both fuses are good, there's a closed circuit and everything works. Otherwise, there's no power. He keeps trying a different pair until he finds a pair that works.

- Tue Apr 21, 2020 1:49 am
- Forum: Clarifications on Project Euler Problems
- Topic: Problem 351
- Replies:
**21** - Views:
**10939**

### Re: Problem 351

I don't think people often return to the solution threads. What I've done in the past is ask the question in the solutions thread, then post a message in these forums directing people to the question.

- Sun Apr 12, 2020 1:55 am
- Forum: Clarifications on Project Euler Problems
- Topic: Problem 711
- Replies:
**6** - Views:
**1020**

### Re: Problem 711

Got it. That's the part I was missing. Thanks.

- Sat Apr 11, 2020 9:36 pm
- Forum: Clarifications on Project Euler Problems
- Topic: Problem 711
- Replies:
**6** - Views:
**1020**

### Problem 711

Am I missing something here? Let's say n=1. Oscar writes "10". Eric can't write any number without exceeding 2. There is one 1. Oscar wins. Yet in the problem statement, Eric guarantees a win.

- Thu Feb 20, 2020 12:40 am
- Forum: Clarifications on Project Euler Problems
- Topic: Problem 135
- Replies:
**29** - Views:
**10145**

### Re: Problem 135

$5^2-3^2-1^2=15$. 15 has at least 3 solutions.DanielJackson wrote: ↑Wed Feb 19, 2020 11:28 pmn = a*b, a > b

Let n = 15 = 15*1 = 5*3

1. a = 15, b = 1 => d = 4, 19^2 - 15^2 - 11^2 = 15

2. a = 5, b = 3 => d = 2, 7^2 - 5^2 - 3^2 = 15

n = 15 has exactly 2 solutions and 15 < 27 (by condition). Where am I wrong?

- Sun Dec 22, 2019 6:39 pm
- Forum: News, Suggestions, and FAQ
- Topic: Errors/Warnings/Bugs
- Replies:
**539** - Views:
**122827**

### Re: Errors/Warnings/Bugs

I probably should have noted when this happened, but one of my last times attempting to access the forums, I instead got something on the bottom of the screen asking "What do you want to do with index.php?", giving me the option to open, save, or cancel. And now when I try to pin or unpin a problem,...

- Tue Nov 12, 2019 9:56 pm
- Forum: Clarifications on Project Euler Problems
- Topic: Problem 688
- Replies:
**7** - Views:
**1282**

### Re: Problem 688

What "new plates"? You take n plates and divide them into k piles. For each calculation of f(n,k), the total number of plates is fixed.

- Sat Nov 09, 2019 3:08 pm
- Forum: Clarifications on Project Euler Problems
- Topic: Problem 082
- Replies:
**22** - Views:
**8315**

### Re: Problem 082

I think the way the sentence is structured can cause confusion. Namely

This could be interpreted to mean the matrix is given one column at a time.a 31K text file containing a 80 by 80 matrix, from the left column to the right column.

- Mon Nov 04, 2019 10:15 pm
- Forum: News, Suggestions, and FAQ
- Topic: Errors/Warnings/Bugs
- Replies:
**539** - Views:
**122827**

### Re: Errors/Warnings/Bugs

This site's been down quite a bit lately it seems. Some sort of SQL error, not always the same each time.

- Tue Sep 24, 2019 8:50 pm
- Forum: Clarifications on Project Euler Problems
- Topic: Problem 669
- Replies:
**5** - Views:
**3901**

### Re: Problem 669

The program was working correctly. All the hand calculations were correct. One simple mistake on a limit of summation threw everything else off. My thanks to RobertStanforth for lending an ear. If I hadn't had to lay everything out to someone else, regardless of whether or not he actually reads all ...

- Mon Sep 23, 2019 8:44 am
- Forum: Clarifications on Project Euler Problems
- Topic: Problem 669
- Replies:
**5** - Views:
**3901**

### Re: Problem 669

At this point, I'm about 1 step away from challenging the answer to this problem. I know a fair number of people have already solved this problem. I know I have everything in correctly, the program appears to operate just fine. I've done just about everything I can. Next step is to verify each step ...

- Fri Sep 06, 2019 4:35 pm
- Forum: News, Suggestions, and FAQ
- Topic: Errors/Warnings/Bugs
- Replies:
**539** - Views:
**122827**

### Re: Errors/Warnings/Bugs

One more thing. Has anyone else noticed the images in people's signatures aren't displaying? I went into my profile to find the source of the image and tried opening it in another browser tab and got: Not Found The requested URL was not found on this server. Additionally, a 404 Not Found error was e...

- Fri Sep 06, 2019 4:27 pm
- Forum: Clarifications on Project Euler Problems
- Topic: Problem 151
- Replies:
**27** - Views:
**12227**

### Re: Problem 151

when starting with A3 you basically start with 1 piece A4 and 1 piece A5, leaving 2 possible options: - pick A4 first -> cut in half, now you have 2 A5 pieces (outside the envelope, the other one is still inside), pick 1 and put the rest back, so the envelope contains only two A5 pieces. Next step ...

- Fri Sep 06, 2019 9:10 am
- Forum: Clarifications on Project Euler Problems
- Topic: Problem 668
- Replies:
**1** - Views:
**678**

### Problem 668

Not sure why my solution is so slow. I've posted in the solutions thread. If someone could view it and give me their insights as to why it seems so much slower than similar solutions (either through a pm or in the solution thread), it would be much appreciated.

- Thu Sep 05, 2019 5:47 pm
- Forum: News, Suggestions, and FAQ
- Topic: Errors/Warnings/Bugs
- Replies:
**539** - Views:
**122827**

### Re: Errors/Warnings/Bugs

I had something similar for these message boards maybe 2 or 3 weeks ago. Which begs the question, "How do we make someone aware of a problem with the message boards when we can't access them?"