Eroare de compilare: user.cpp:2:22: error: hash_map.h: No such file or directory user.cpp: In function ‘int main()’: user.cpp:44: error: ‘hash_map’ was not declared in this scope user.cpp:44: error: expected primary-expression before ‘int’ user.cpp:44: error: expected ‘;’ before ‘int’ user.cpp:48: error: ‘H’ was not declared in this scope user.cpp:58: error: ‘H’ was not declared in this scope