Compilare: user.cpp: In function ‘void bk(std::vector<long long int>)’: user.cpp:56:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<fv.size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:88:35: warning: format ‘%lld’ expects argument of type ‘long long int*’, but argument 4 has type ‘int*’ [-Wformat=] fscanf(in,"%lld%lld",&A,&y); ^ user.cpp:81:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%lld",&n); ^ user.cpp:88:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%lld%lld",&A,&y); ^