a graph algorithm library with a strong focus on algorithm prototyping and scalable network analysis

The problem data (Test case generator, judge's solution, task, ...) of Library Checker

ライブラリテスト用の問題集

Tools for various online judges. Downloading sample cases, generating additional test cases, testing your code, and submitting it.

Google's Operations Research tools:

Othello AI (AlphaGo's PV-MCTS algorithm)

Source codes for "Algorithm and Data Structure"