Compilare: main.cpp: In function 'void dfsarbore(int, int)': main.cpp:17:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<G[nod].size();i++) ~^~~~~~~~~~~~~~ main.cpp: In function 'void dfsgoup(int, int, bool)': main.cpp:44:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<G[nod].size();i++){ ~^~~~~~~~~~~~~~ main.cpp:57:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<G[nod].size();i++){ ~^~~~~~~~~~~~~~