如何给复合map添加数据(语言-c++)

Question

OBJECT_INDEX = eChinese；（0）
NAME_INDEX = XiaoMing；（0）
map如上表述，要如何往AllScore添加一个数据，比如数据为 eChinese,XiaoMing,100

std::map<OBJECT_INDEX, std::map<NAME_INDEX, int>>AllScore;

enum class OBJECT_INDEX{
  eChinese = 0,
  eMath    = 1,
  eEnglish = 2,
  eHistory = 3,
  eArt     = 4,
};

enum class NAME_INDEX{
  XiaoMing = 0,
  XiaoHong = 1,
  XiaoHan  = 2,
  XiaoMei  = 3,
};

Answer 1

std::map<NAME_INDEX,int> m;
m[XiaoMing]=100;
AllScore[eChinese]=m;