Project Euler Forum

I want to make sure I'm properly understanding the problem. Looking at the example set, we are looking for steady squares between 1 and ddddddddd in Base 14 (nine d's or 20,661,046,783 decimal), and between 1 and 10,000 d's for the problem set.

If that assumption is correct, does the answer for 1<=n<=6 equal 14c or 264 decimal?

I see the easy part of the pattern. Still struggling with the grander vision.

Thanks,
...mrt

14c is correct.

I am puzzled here, quoting from the problem description " c372 = aa0c37, and the sum of its digits is c+3+7=18"

from my calcuations, the sum of the digits should be c->12 + 3->3 + 7->7 = 22, not 18. I don't see what I'm doing wrong, perhaps this problems text should be fixed, either that or perhaps you can tell me where I'm thinking wrongly.

BostonBear wrote:I am puzzled here, quoting from the problem description " c372 = aa0c37, and the sum of its digits is c+3+7=18"

from my calcuations, the sum of the digits should be c->12 + 3->3 + 7->7 = 22, not 18. I don't see what I'm doing wrong, perhaps this problems text should be fixed, either that or perhaps you can tell me where I'm thinking wrongly.

Perhaps you shouldn't cut the last 5 words from the sentence you quoted

TripleM wrote:

BostonBear wrote:I am puzzled here, quoting from the problem description " c372 = aa0c37, and the sum of its digits is c+3+7=18"

from my calcuations, the sum of the digits should be c->12 + 3->3 + 7->7 = 22, not 18. I don't see what I'm doing wrong, perhaps this problems text should be fixed, either that or perhaps you can tell me where I'm thinking wrongly.

Perhaps you shouldn't cut the last 5 words from the sentence you quoted

Yeah, duh... Thanks I did do the conversion before I added the numbers in the sequence, but took the sums in base 10 and then converted the number to base 14, thereby missing the obvious.

Anybody else having trouble with this, make sure your program doesn't store "0" digits as "14", especially if it only does it in a case that doesn't have any zeros up to the 9 digits of the example.

Following up on mrtollefson's first post to this forum, I'm trying to first solve this for 1<=n<=6 and I'm not coming up with a digit sum of 14c. For this range, I am finding 9 results, but the sum of my digits is less than half of what is expected. I'm wondering if I could PM my 9 results to someone and see if they could clue me in to the first missing result - that should hopefully get me going in the right direction! Thanks!

tchiari wrote: Thu May 07, 2020 4:09 pm I am finding 9 results

I won't tell you the values, but I will confirm that you are correct that you are missing some solutions. If your original solution isn't working, try it a different way (another language or method) and you might find them, the solution space is not so large for this range.