Compilare: user.cpp: In function ‘void BF()’: user.cpp:37:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0;i<lista[nod].size();i++ ) ^ user.cpp: In function ‘int main()’: user.cpp:81:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d%d",&p,&n,&m); ^ user.cpp:83:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&a[i]); ^ user.cpp:86:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d%d",&x,&y,&z); ^