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Competitive-programming

3 articles tagged with #competitive-programming

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August 15, 2025·6 min read·algorithms

0x55555555 is Actually Alien Code (And Other Power Problem Adventures)

What started as a simple Power of Four problem turned into me decoding hexadecimal mysteries and questioning everything I know about binary. Spoiler: bits are weirder than you think.

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June 3, 2025·5 min read·cpp

C++ Lambdas Have Trust Issues

A quick LeetCode solution taught me why C++ lambda return type deduction is pickier than I thought.

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March 17, 2025·7 min read·codeforces

Inside the Codeforces Ladder & User API System

A detailed overview of the algorithms and mathematical reasoning behind our Codeforces ladder and user APIs.

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