Eroare de compilare: user.cpp: In function ‘int main(int, const char**)’: user.cpp:36:30: error: ‘sync_with_stdio’ was not declared in this scope ios : sync_with_stdio (false) ; ^ user.cpp:36:2: warning: label ‘ios’ defined but not used [-Wunused-label] ios : sync_with_stdio (false) ; ^ user.cpp:37:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("arbint.in", "r", stdin) ; ^ user.cpp:38:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("arbint.out", "w", stdout) ; ^