Eroare de compilare: main.cpp: In function 'int main()': main.cpp:6:5: error: 'ifstream' was not declared in this scope ifstream f("flip.in"); ^~~~~~~~ main.cpp:6:5: note: suggested alternative: In file included from /usr/include/c++/6/ios:38:0, from /usr/include/c++/6/ostream:38, from /usr/include/c++/6/iostream:39, from main.cpp:1: /usr/include/c++/6/iosfwd:162:34: note: 'std::ifstream' typedef basic_ifstream<char> ifstream; ^~~~~~~~ main.cpp:7:5: error: 'f' was not declared in this scope f>>n; ^ main.cpp:46:13: error: 'cout' was not declared in this scope cout<<s; ^~~~ main.cpp:46:13: note: suggested alternative: In file included from main.cpp:1:0: /usr/include/c++/6/iostream:61:18: note: 'std::cout' extern ostream cout; /// Linked to standard output ^~~~ Non zero exit status: 1