Fix merge conflicts to merge change from #5080 (#8911)

* Input for user choose his Collatz sequence

Now the user can tell the algorithm what number he wants to run on the Collatz Sequence.

* updating DIRECTORY.md

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Co-authored-by: Hugo Folloni <hugofollogua07@gmail.com>
Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>

maths/collatz_sequence.py

@@ -57,7 +57,7 @@ def collatz_sequence(n: int) -> Generator[int, None, None]:
 
 
 def main():
-    n = 43
+    n = int(input("Your number: "))
     sequence = tuple(collatz_sequence(n))
     print(sequence)
     print(f"Collatz sequence from {n} took {len(sequence)} steps.")