Forum: Puzzles
2022-06-20, 09:47
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Replies: 8
Views: 1,143
My (fairly naive, single-threaded) code took...
My (fairly naive, single-threaded) code took about two and a half hours to do n=20, and it goes up by a factor of about 4 for each increase in n. By multithreading it I think I could do n=23 or even...
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Forum: Puzzles
2022-06-15, 13:36
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Replies: 8
Views: 1,143
To help people check their answers without...
To help people check their answers without spoiling the puzzle, these were the last two digits of each of my values for n up to 20.
00, 01, 03, 11, 35, 08, 80, 48, 14, 23, 34, 49, 46, 37, 33, 34,...
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Forum: Puzzles
2022-03-05, 20:56
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Replies: 7
Views: 1,512
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Forum: Puzzles
2022-02-23, 10:36
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Replies: 21
Views: 3,166
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Forum: Puzzles
2022-02-22, 22:40
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Replies: 21
Views: 3,166
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Forum: Puzzles
2022-02-13, 12:00
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Replies: 25
Views: 3,646
The solution is up on the IBM site now, so...
The solution is up on the IBM site now, so sharing my code as SmartMersenne suggested.
The key observations I used to make it reasonably fast were:
- You can rotate the whole circle without...
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Forum: Puzzles
2022-01-18, 11:04
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Replies: 25
Views: 3,646
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Forum: Puzzles
2022-01-17, 14:09
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Replies: 25
Views: 3,646
I get the same answers for n = 9, d = 7 and n =...
I get the same answers for n = 9, d = 7 and n = 10, d = 8. It is possible to do it with a lot less computation - my single threaded C++ code took about 3.5s for n = 9, d = 7 and about 32s for n = 10,...
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Forum: Puzzles
2021-09-13, 18:36
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Replies: 20
Views: 5,065
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Forum: Puzzles
2021-09-13, 10:12
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Replies: 20
Views: 5,065
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Forum: Puzzles
2021-09-07, 14:07
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Replies: 20
Views: 5,065
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Forum: Puzzles
2021-01-27, 17:34
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Replies: 36
Views: 7,815
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Forum: Puzzles
2021-01-25, 21:00
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Replies: 36
Views: 7,815
Awesome video Kebbaj! I was planning to do...
Awesome video Kebbaj! I was planning to do something similar to see if I could spot any patterns in the solutions, but I haven't had time. From your video it doesn't look like there is an obvious...
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Forum: Puzzles
2021-01-21, 10:14
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Replies: 36
Views: 7,815
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Forum: Puzzles
2021-01-20, 22:49
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Replies: 36
Views: 7,815
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Forum: Puzzles
2021-01-20, 21:46
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Replies: 36
Views: 7,815
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Forum: Puzzles
2019-12-24, 09:02
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Replies: 59
Views: 28,986
Brackets
I think there was some discussion earlier about whether expressions would be allowed which used brackets in such a way that they have subexpressions that can't be evaluated in a single pass without...
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Forum: Puzzles
2018-11-10, 18:28
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Replies: 69
Views: 8,743
Hi EdH,
I haven't read your code in detail,...
Hi EdH,
I haven't read your code in detail, but based on your description I think your approach could work, but you would probably see a lot more 10 solutions before an 11 (you mentioned thousands...
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Forum: Puzzles
2016-06-29, 01:26
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Replies: 16
Views: 4,443
Hi, I have just submitted a solution but it is...
Hi, I have just submitted a solution but it is very close to the deadline and it sometimes takes a while to find out if your solution is correct or not. Could someone who has already got a correct...
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