* Create prefix_sum.py
* [pre-commit.ci] auto fixes from pre-commit.com hooks
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* Fix pre-commit and ruff errors
* [pre-commit.ci] auto fixes from pre-commit.com hooks
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* Rename prefix_sum.py to range_sum_query.py
* Refactor description
* Fix
* Refactor code
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* Fix
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Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Maxim Smolskiy <mithridatus@mail.ru>