Programming Challenges

Strengthen your problem-solving skills with language-neutral challenges you can solve in Python, C++, or C#. Every submission is checked by automated tests and reviewed by AI.

  • Python · C++ · C#
  • Automated tests
  • AI code review
  • Community solutions
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150
Challenges
2
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3
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2 challenges
Medium

List Primes With a Sieve

Find primes up to a limit by marking composite multiples.

Number-theorySieve
No solutions yet
Medium

Sum of Primes Below a Limit

Add all primes strictly below a limit.

Number-theorySieve
No solutions yet