Compilare: user.cpp: In function ‘int main()’: user.cpp:36:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<Event.size(); i++) ^ user.cpp:39:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (i<Event.size() && Event[i].first == nowpos) ^ user.cpp:19:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("patrate1.in", "r", stdin); ^ user.cpp:20:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("patrate1.out", "w", stdout); ^