Project Euler Forum

I am sure (99.99%) that solved correctly Problem 100.
But the system said that my answer is wrong.
Could someone let me know if the system recognizes his\her solution as correct?
Thank you.

Yasha13 wrote: Sat Aug 29, 2020 11:19 pm I am sure (99.99%) that solved correctly Problem 100.
But the system said that my answer is wrong.
Could someone let me know if the system recognizes his\her solution as correct?
Thank you.

I have verified that the system accepts the correct answer for this one.

Thank you!

I'm not posting solutions here. Just need help.

My initial solution was rejected.
It was b = 707106788769 | N = 1000000010723 which is closer to 10^12.

My b is also smaller than the b in the solution.

b * (b-1) / N / (N-1) == 0.5 holds too.

Am I missing something?!
I'm super confused...

maxremzi wrote: Mon Aug 26, 2024 3:27 pm b * (b-1) / N / (N-1) == 0.5 holds too.

This does not precisely hold for those values of b and N. It's close, though: the discrepancy is so small that 64-bit floating point arithmetic would not detect it.

Yes you are right. I had only checked it on computer. Thanks a lot.