Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:18:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int t=0;t<vec[x].size();t++) ^ user.cpp: In function ‘void dfs1(int)’: user.cpp:28:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int t=0;t<vecr[x].size();t++) ^ user.cpp: In function ‘int main()’: user.cpp:66:23: warning: ‘poz1’ may be used uninitialized in this function [-Wmaybe-uninitialized] for(i=0;i<dim[poz1];i++) ^