'Admin', 'student' => 'Student', 'teacher' => 'Teacher', 'problem uploader' => 'Problem Uploader', 'problem manager' => 'Problem Manager', 'contest judger' => 'Contest Judger', 'contest only' => 'Contest Only', 'last active at' => 'Last active at', 'online' => 'Online', 'offline' => 'Offline', ];