Compilare: user.cpp: In function ‘OUT Search(int)’: user.cpp:36:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<H[F].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:60:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<H[i].size();j++) ^ user.cpp:49:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("loto.in","r",stdin); ^ user.cpp:50:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("loto.out","w",stdout); ^ user.cpp:51:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&N,&Sum); ^ user.cpp:54:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&v[i]); ^