{ "title": "Fibonacci Sequence", "description": "Calculate the n-th Fibonacci number using a function. The Fibonacci sequence is defined as follows: F(0) = 0, F(1) = 1, and F(n) = F(n-1) + F(n-2) for n > 1.", "description_md": "problems/fibonacisequence/description.md", "test_code": "problems/fibonacisequence/test.py" }