Eroare de compilare: main.cpp: In function 'int main()': main.cpp:14:2: error: 'cin' was not declared in this scope cin >> n >> k; ^~~ main.cpp:14:2: note: suggested alternative: In file included from main.cpp:1:0: /usr/include/c++/6/iostream:60:18: note: 'std::cin' extern istream cin; /// Linked to standard input ^~~ main.cpp:30:2: error: 'cout' was not declared in this scope cout << Sum; ^~~~ main.cpp:30:2: 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 ^~~~ main.cpp:11:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("deque.in", "r", stdin); ^ main.cpp:12:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("deque.out", "w", stdout); ^ Non zero exit status: 1