competitive-programming

Implementing FFT

Write recursive DP without thinking about memoization

The Akra-Bazzi theorem - a generalization of the master theorem for recurrences

The Boost C++ library in competitive programming

PSA: Increase your stack size before the Meta Hacker Cup, here's how

The Floyd-Warshall algorithm and its generalizations

User editorial for Codeforces Round 513 by Barcelona Bootcamp (rated, Div. 1 + Div. 2)

Preserving Hash Code?

Improvement suggestions for CF Catalog

A comprehensive guide to permutations for beginners

Insights from testing and preparing contests, and why problemsetting trends need to change

Greedoids: a formal way to look at families of greedily-solvable problems

On using vim, make and gdb for online (CF, AtCoder) and onsite (ICPC, IOI) contests

On using C on Codeforces (and some compiler update requests)

Catalan Numbers and Generating Uniform Balanced Bracket Sequences

InterviewForces Contest #1 (Div. 7)