Everything that is genuinely useful but refuses to sit inside a topic branch.
Theory
- Complexity Theory — asymptotics, complexity classes, reductions
- Algorithmic Paradigms — greedy, divide and conquer, DP, flows, randomization
- Programming Paradigms
- Proof Techniques
- Amortized Analysis
Practice
- CP Workflow — how to read a problem, budget time, and not panic
- Common Pitfalls — overflow, precision, UB, off-by-one
- Debugging and Stress Testing
- Constant Factor Optimization
- Contest Checklist
Reference
- Complexity Cheatsheet — what fits in one second
- Problem Pattern Recognition
- Algorithmic Puzzles
- Set Theory and Notation