Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:14:5: error: ‘vector’ was not declared in this scope vector<long long> a; ^ user.cpp:14:12: error: expected primary-expression before ‘long’ vector<long long> a; ^ user.cpp:14:12: error: expected ‘;’ before ‘long’ user.cpp:25:28: error: ‘a’ was not declared in this scope if (t==v) {a.push_back[i];t=0;++x;} ^ user.cpp:32:8: error: ‘a’ was not declared in this scope g<<a[i]<<' '; ^