3 ms·
Previously on HN: https://news.ycombinator.com/item?id=34692537 https://news.ycombinator.com/item?id=34692537 This time a news is that the previously known val
by lifthrasiir 4y ago
Previously on HN: https://news.ycombinator.com/item?id=34692537 https://news.ycombinator.com/item?id=34692537
This time a news is that the previously known value for n = 7, 1371, turned out to be incomplete due to the program bug and it is now thought to equal to 1372 instead.
- hgsgm 4y agoAnd the bug was quite silly -- it does a simple standard thing (remove obvious symmetries) in a more complicated way (at the end of a long computation, instead of at the start), incorrectly.
- phkahler 4y agoAlways good to test code with and without such optimizations to verify the results are the same. That's not always practical though for large problems and optimizations that yield significant time savings.
- actually_a_dog 4y agoAs the saying goes, there are only two hard problems in computer science: naming things, cache invalidation, and off by one errors.