Approved.

I have 2 suggestions.

1. Specify the limits for n ( 0<=n<=94 in most languages ) in the description to set expectations and also becuase it's a best practice
2. Use the max case as one of the test cases: nth_fib(94) == 12,200,160,415,121,876,738

unsigned long long max value == 18,446,744,073,709,551,615

Fastest way, select Issues on the left, below VIEW. That would leave only the posts tagged as Issues, both resolved and still open.

Thanks. I don't know of a way to search the comments for duplicate issues.

There is already an open issue about that

If there are restrictions to the solution such as "CANNOT USE THE KEYWORD DISCTINCT", they need to be clearly explained in the instructions/description.