tutorial

Implementing FFT

On using RSS feeds

Convenient and near-optimal binary search on floating point numbers

An elementary way of solving recurrences

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

On lambdas, C++ and otherwise: the what, the why, and the how

The Floyd-Warshall algorithm and its generalizations

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

Floors, ceilings and inequalities for beginners (with some programming tips)

How to learn better, and what most people don't get about learning

A comprehensive guide to permutations for beginners

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

Probability 101, the intuition behind martingales and solving problems with them

GCC Optimization Pragmas