Problem 172

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Comments, questions and clarifications about PE problems.
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mdean
Posts: 206
Joined: Tue Aug 02, 2011 2:05 am

Problem 172

Post by mdean »

I have posted a question in the thread for those who have completed the problem. Sadly, it's at the end of a long post as it wouldn't let me make a new post for just the question. It would be greatly appreciated if someone was able and willing to answer either in that thread or in a private message.
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sivakd
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Joined: Fri Jul 17, 2009 9:37 am
Location: California, USA
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Re: Problem 172

Post by sivakd »

Replied in the private forum.
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puzzle is a euphemism for lack of clarity
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enigmaticcam
Posts: 16
Joined: Wed Sep 30, 2015 12:07 am

Re: Problem 172

Post by enigmaticcam »

I have an algorithm that gives me an answer that is not correct. It matches my brute force algorithm up to 9 digits, but the brute force is too slow beyond that. Can anyone confirm these?

xxxx(removed)

Edit: whoops, I realized what my problem was. I was counting all digits up to 18-digit numbers, not just 18-digit numbers.
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