// code challenge

Commit message linter

~12 min

Enforce a team's commit convention with ten lines of Python.

Your team requires commit messages shaped like `type: subject` where:

- `type` is one of: `feat`, `fix`, `docs`, `chore` - a colon and a single space follow the type - the subject is non-empty and the TOTAL length is ≤ 50 characters

Read one commit message from stdin. Print `OK` if it passes, otherwise `REJECTED`.

Examples: ``` fix: raise db timeout to 5s → OK update stuff → REJECTED (no valid type) feat:no space → REJECTED (missing space) ``` Hint: `msg.split(": ", 1)` and check the parts.

Language: python · Judge0

// sample tests

stdin "fix: raise db timeout to 5s" → stdout "OK"
stdin "update stuff" → stdout "REJECTED"
stdin "feat:no space" → stdout "REJECTED"

msg = input()
TYPES = ["feat", "fix", "docs", "chore"]
# print OK or REJECTED