Eroare de compilare: main.cpp: In function 'int main()': main.cpp:30:19: error: request for member 'erase' in 'mp.std::unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::operator[]<int, int, std::hash<int>, std::equal_to<int>, std::allocator<std::pair<const int, int> > >(x)', which is of non-class type 'std::unordered_map<int, int>::mapped_type {aka int}' mp[x].erase(); ^~~~~ Non zero exit status: 1