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Add Project Euler problem 117 solution 1 (#6872)

Update DIRECTORY.md

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Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
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Maxim Smolskiy committed
9720e6a6cf52e2395e2d7ef3ef6ae91a355d318e
Parent: ee77812
Committed by GitHub <noreply@github.com> on 3/2/2023, 4:51:48 PM