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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.
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Hard
Shortest Delivery Tour
Visit every city once and return home as cheaply as possible.
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Hard
Strongly Connected Components
Count groups of nodes that can all reach each other.
No solutions yet
Hard
Largest Rectangle in a Histogram
Find the largest rectangle that fits under a histogram.
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Hard
Minimum Window Substring
Find the shortest piece of text containing all required characters.
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Hard
Matrix Chain Multiplication
Find the cheapest order to multiply a chain of matrices.
No solutions yet