Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:58:53: error: invalid initialization of non-const reference of type ‘std::istream& {aka std::basic_istream<char>&}’ from an rvalue of type ‘std::ifstream {aka std::basic_ifstream<char>}’ tie(n, m, v, e) = readData(ifstream("eliminare.in")); ^ user.cpp:33:58: error: in passing argument 1 of ‘std::tuple<int, int, std::vector<int, std::allocator<int> >, std::vector<std::pair<int, int>, std::allocator<std::pair<int, int> > > > readData(std::istream&)’ tuple<int, int, vector<int>, vector< pair<int, int> > > readData(istream& in) { ^