Compilare: user.cpp: In function ‘void dfs(int, int)’: user.cpp:24:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else for (i=0;i<apm[nod].size();i++){ ^ user.cpp: In function ‘int main()’: user.cpp:33:35: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d%d%d",&n,&m,&k); ^ user.cpp:37:81: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d%d%d",&v[i].second.first,&v[i].second.second,&v[i].first); ^ user.cpp:59:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d%d",&inc,&sf); ^