関連ワード:  how to declare a map in c++    how to initialize a map in c++    how to create a map in c++    how to define a map in c++    how to initialize a map in c++ with 0    how to declare a unordered_map in c++    how to declare a hash map in c++    how to declare a map in cpp    how to declare and initialize a map in c++    how to declare ordered map in c++