def sizeToTeam(size):
    """Given a size in kilobytes, returns the 512kb.club team (green/orange/blue),
       or "N/A" if size is too big for 512kb.club"""
    if size<100:
        return "green"
    elif size<250:
        return "orange"
    elif size<=512:
        return "blue"
    else:
        return "N/A"