Compilare: user.cpp: In function ‘void DFS(int, int)’: user.cpp:39:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( i = 0 ; i < graf[nod].size() ; i++ ) ^ user.cpp: In function ‘int main()’: user.cpp:117:29: warning: ‘xmax’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout << maxim << " " << xmax << " " << ymax ; ^ user.cpp:117:49: warning: ‘ymax’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout << maxim << " " << xmax << " " << ymax ; ^ user.cpp:80:17: warning: ‘root’ may be used uninitialized in this function [-Wmaybe-uninitialized] DFS(root,1) ; ^