Eroare de compilare: main.cpp: In function 'int main()': main.cpp:18:1: error: reference to 'cin' is ambiguous cin>>n>>a; ^~~ main.cpp:7:10: note: candidates are: std::ifstream cin ifstream cin("spion.in"); ^~~ In file included from main.cpp:3:0: /usr/include/c++/6/iostream:60:18: note: std::istream std::cin extern istream cin; /// Linked to standard input ^~~ main.cpp:34:1: error: reference to 'cout' is ambiguous cout<<nr; ^~~~ main.cpp:8:10: note: candidates are: std::ofstream cout ofstream cout("spion.out"); ^~~~ In file included from main.cpp:3:0: /usr/include/c++/6/iostream:61:18: note: std::ostream std::cout extern ostream cout; /// Linked to standard output ^~~~ main.cpp:66:1: error: reference to 'cout' is ambiguous cout<<p/(nr1*nr2); ^~~~ main.cpp:8:10: note: candidates are: std::ofstream cout ofstream cout("spion.out"); ^~~~ In file included from main.cpp:3:0: /usr/include/c++/6/iostream:61:18: note: std::ostream std::cout extern ostream cout; /// Linked to standard output ^~~~ Non zero exit status: 1