Compilare: user.cpp: In function ‘int main()’: user.cpp:61:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<ras.size(); i++) ^ user.cpp:52:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("divizori.in", "r", stdin); ^ user.cpp:53:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("divizori.out", "w", stdout); ^ user.cpp:55:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d", &n); ^