Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:26:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<G[nod].size();i++) ~^~~~~~~~~~~~~~ main.cpp:26:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for (int i=0;i<G[nod].size();i++) ^~~ main.cpp:28:3: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' H[++K] = nod; ^