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Improve Project Euler problem 043 solution 1 (#5772)

* updating DIRECTORY.md

* Fix typo

* Improve solution

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
M
Maxim Smolskiy committed
1a43c92c77790632e7958df9c1048ed77aa36f68
Parent: 4896026
Committed by GitHub <noreply@github.com> on 11/5/2021, 7:44:24 PM