Tokyo Tech Coder has been shut down.

Source code: https://github.com/eagletmt/ttcoder
Database: https://storage.googleapis.com/ttc-wanko-cc/ttcoder.sql.gz (SHA-512 9f2681bb3763d2d190a9b525ebbfbaa41380dafccfbfa2b8ac375d603c76428afd591b39255a57f69b9e6e024f5825db3d6652a49a03474cfcfc33c92f301585)
Twitter OAuth app for Tokyo Tech Coder is also deleted.