Eroare de compilare: user.cpp:3:20: error: hash_set: No such file or directory user.cpp:13: error: expected constructor, destructor, or type conversion before '<' token user.cpp: In function 'void initializare()': user.cpp:21: error: 'v' was not declared in this scope user.cpp: In function 'int check()': user.cpp:32: error: 'hash_set' was not declared in this scope user.cpp:32: error: expected primary-expression before 'int' user.cpp:32: error: expected `;' before 'int' user.cpp:35: error: 'v' was not declared in this scope user.cpp:39: error: 'v' was not declared in this scope user.cpp:42: error: 'it' was not declared in this scope user.cpp:42: error: 'v' was not declared in this scope user.cpp: In function 'int main()': user.cpp:87: error: 'v' was not declared in this scope user.cpp:104: error: 'v' was not declared in this scope