Compilare: main.cpp: In function 'int main()': main.cpp:42:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<v[nod].size();j++) ~^~~~~~~~~~~~~~ main.cpp:53:4: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(int i=1;i<=n;i++) ^~~ main.cpp:55:5: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' out<<sum<<"\n"; ^~~