Compilare: user.cpp: In function ‘void split(int, int, int)’: user.cpp:22:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (cur.size()<=id) cur.push_back(vector<int>()); ^ user.cpp: In function ‘int main()’: user.cpp:43:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("copii2.in","r",stdin); ^ user.cpp:44:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("copii2.out","w",stdout); ^