[Community Puzzle] Mask-Matching - Puzzle discussion

Coding Games and Programming Challenges to Code Better

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Created by @NicknamedTwice,validated by @ajaiy,@TBali and @sanderrapanan.
If you have any issues, feel free to ping them.

Test #13 prefixes the hex code with “0x”.
None of the other tests do this, nor is it indicated in the instructions that it might happen.

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sorry, i fixed it now