def determine_credit(submissions):
    """Adds submissions of zero length to the no-credit list.
    Adds others to the credit list.
    Returns a dictionary with keys credit and nocredit, with the lists as values
    """
    credit = []
    nocredit = []
    for s in submissions:
        if 'body' in s.keys() and s['body'] is not None and len(s['body']) > 2:
            credit.append(s['student_id'])
        else:
            nocredit.append(s['student_id'])
    return {'credit': credit, 'nocredit': nocredit}
