- gruntmaster-problem [--contest=mycontest] add problem_id
- gruntmaster-problem [--contest=mycontest] list
- gruntmaster-problem [--contest=mycontest] rm problem_id
- gruntmaster-problem [--contest=mycontest] show problem_id
- gruntmaster-problem [--contest=mycontest] set [--file] problem_id key value
+ gruntmaster-problem add problem_id
+ gruntmaster-problem list
+ gruntmaster-problem rm problem_id
+ gruntmaster-problem show problem_id
+ gruntmaster-problem set [--file] problem_id key value
+ gruntmaster-problem get problem_id key