Compilare: user.cpp: In function ‘void dfs(int, int)’: user.cpp:35:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<vecini[nod].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:16:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&N); ^ user.cpp:20:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&a,&b); ^