Eroare de compilare: user.cpp:7:14: error: variable ‘std::ifstream cin’ has initializer but incomplete type ifstream cin ( "sdo.in" ); ^ user.cpp:8:15: error: variable ‘std::ofstream cout’ has initializer but incomplete type ofstream cout ( "sdo.out" ); ^ user.cpp: In function ‘int main()’: user.cpp:16:3: error: reference to ‘cin’ is ambiguous cin >> N >> k; ^ user.cpp:7:10: note: candidates are: <typeprefixerror>cin ifstream cin ( "sdo.in" ); ^ In file included from user.cpp:1:0: /usr/include/c++/4.8/iostream:60:18: note: std::istream std::cin extern istream cin; /// Linked to standard input ^ user.cpp:18:5: error: reference to ‘cin’ is ambiguous cin >> x; ^ user.cpp:7:10: note: candidates are: <typeprefixerror>cin ifstream cin ( "sdo.in" ); ^ In file included from user.cpp:1:0: /usr/include/c++/4.8/iostream:60:18: note: std::istream std::cin extern istream cin; /// Linked to standard input ^ user.cpp:23:3: error: reference to ‘cout’ is ambiguous cout << v[k - 1]; ^ user.cpp:8:10: note: candidates are: <typeprefixerror>cout ofstream cout ( "sdo.out" ); ^ In file included from user.cpp:1:0: /usr/include/c++/4.8/iostream:61:18: note: std::ostream std::cout extern ostream cout; /// Linked to standard output ^