Eroare de compilare: user.cpp:14:1: error: ‘unordered_map’ does not name a type unordered_map<int, int> el ; ^ user.cpp: In function ‘int main()’: user.cpp:46:13: error: ‘el’ was not declared in this scope el[ v[i] ] = i ; ^ user.cpp:69:28: error: ‘el’ was not declared in this scope int unde = el[next] ; ^ user.cpp:89:9: error: ‘el’ was not declared in this scope el.clear() ; ^