Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:26:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<Graf[current_node].size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:65:18: warning: ‘node_max’ may be used uninitialized in this function [-Wmaybe-uninitialized] dfs(node_max); ^