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Practice Competition 02


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2025-07-06 12:00 GMT

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2025-08-30 12:00 GMT

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Practice Competition 02

Crystal

Compiler settings

We use crystal 1.17.0 to compile your program with the following command:

$ crystal build {mainfile} -O 2 -o {executable} --no-color

  • {mainfile} is the entrypoint file (you can specify which file this is when submitting).
  • {executable} is the compiled executable.

File extensions

Files with any of the following file extensions will be used: .cr

Additional information

Additional language-specific advice and information for many languages is available in the knowledge base