EnterRoomCount getEnterRoomCount(DateTime time, List <EnterRoomCount> infoList, int initCount)
    {
        EnterRoomCount info = null;

        foreach (var t in infoList)
        {
            if (t.m_time == time)
            {
                info = t;
                break;
            }
        }
        if (info == null)
        {
            info        = new EnterRoomCount();
            info.m_time = time;
            info.init(initCount);
            infoList.Add(info);
        }
        return(info);
    }