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Improve Project Euler problem 012 solution 2 (#5760)

* Improve solution

* updating DIRECTORY.md

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
M
Maxim Smolskiy committed
765be4581e66f1e8e92f24606c243a8cd45e4d3c
Parent: 0ea5c73
Committed by GitHub <noreply@github.com> on 11/3/2021, 8:32:10 PM