Compilare: user.cpp: In function ‘void bfs(int, int)’: user.cpp:21:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<gr[poz].size();++i) ^ user.cpp: In function ‘int main()’: user.cpp:46:35: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(si,"%i %i %i",&n,&m,&s); ^ user.cpp:50:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(si,"%i %i",&a,&c); ^