Competitive-programming
3 posts
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.
C++ Lambdas Have Trust Issues
A quick LeetCode solution taught me why C++ lambda return type deduction is pickier than I thought.
Inside the Codeforces Ladder & User API System
A detailed overview of the algorithms and mathematical reasoning behind our Codeforces ladder and user APIs.