Compilare: user.cpp: In function ‘void BFS()’: user.cpp:16:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0;i<=n;i++) ^ user.cpp:22:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0;i<a[aux].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:38:38: warning: format ‘%d’ expects argument of type ‘int*’, but argument 4 has type ‘long int*’ [-Wformat=] fscanf(f,"%d%d%d%d",&n,&m,&st,&fi); ^ user.cpp:44:35: warning: format ‘%d’ expects argument of type ‘int*’, but argument 5 has type ‘long int*’ [-Wformat=] fscanf(f,"%d%d%d",&x,&y,&d); ^ user.cpp:38:39: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d%d%d",&n,&m,&st,&fi); ^ user.cpp:44:36: 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,&d); ^