Hi, can anyone confirm for (a+b+c<=10000) number of triangles is 7677
Thank you!
Problem 257
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See also the topics:
Don't post any spoilers
Comments, questions and clarifications about PE problems.
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daniel.is.fischer
- Posts: 2400
- Joined: Sun Sep 02, 2007 11:15 pm
- Location: Bremen, Germany
Re: Problem 257
Indeed, it is.
Il faut respecter la montagne -- c'est pourquoi les gypaètes sont là.
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harryh
- Posts: 2091
- Joined: Tue Aug 22, 2006 9:33 pm
- Location: Thessaloniki, Greece
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quilan
- Posts: 182
- Joined: Fri Aug 03, 2007 11:08 pm
Re: Problem 257
Wow... hours of reduction to that... why haven't more people solved this yet 
?!
?!ex ~100%'er... until the gf came along.
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tf08rq0
- Posts: 1
- Joined: Thu Sep 05, 2019 5:56 pm
Problem 257
I solved problem 257 using similar technique as the others who solved it. Then I found out missing triplets and rewrote my code completely. Now I can generate all triplets and there are more than twice the number of unique triplets than the answer says.
I want to get in touch with the creator of this problem, because I have a list of all triplets satisfying the all constraints for the problem, and they are more then the given answer!!!
I want to get in touch with the creator of this problem, because I have a list of all triplets satisfying the all constraints for the problem, and they are more then the given answer!!!
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Animus
- Administrator
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- Joined: Sat Aug 16, 2014 1:23 pm
Re: Problem 257
Hi tf08rq0tf08rq0 wrote: Thu Sep 05, 2019 6:06 pm I solved problem 257 using similar technique as the others who solved it. Then I found out missing triplets and rewrote my code completely. Now I can generate all triplets and there are more than twice the number of unique triplets than the answer says.
It seems pretty improbable that you have found a grave error so far unnoticed in a problem that has been around for almost 10 years and has over 500 solvers.
However, you can send me (via PM) the values for a,b,c for the smallest 3 extra triangles you have found and I'll have a look if I can either verify your claim or point out where you went wrong.
Best regards, Animus