fix problem 23

[joyemang33]

Summary

This pull request removes several existing test input and answer files and adds a new test input for problem 23. The main changes involve cleaning up the old test cases and introducing a new, likely more relevant, test case.

Test data cleanup:

• Removed old test files that have deliberate TIDs for bypassing the correctness checking

Test data update:

• Added a new input file 10.in with the test value 220941104 from the private test

close #106

Please read CONTRIBUTING.md before submitting.

Type of Change

• New research problem
• New algorithmic problem
• Bug fix
• Documentation update
• Other:

Testing

int main(){
  return 0;
}

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Summary
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Total: 1
Successful: 1
Failed: 0
Average Score: 0.00

Now, an empty solution can result in 0 points.

For human reference solutions (private):

============================================================
Summary
============================================================
Total: 1
Successful: 1
Failed: 0
Average Score: 100.00

Checklist

• Code follows the project structure and conventions
• Self-review completed
• Documentation updated (if applicable)

CI Validation (for new problems)

When adding new problems, CI will automatically validate that your reference solution achieves score > 0.

• Algorithmic problems: Include reference.cpp in your problem directory
• Research problems: Include reference.py (or reference.cpp if language: cpp in config.yaml)