Compilare: main.cpp: In function 'void DFS(int)': main.cpp:25:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<A[nod].size();i++) ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:32:1: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(int i=1;i<=N;i++) ^~~ main.cpp:36:5: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' for(int i=S.size()-1;i>=0;i--) ^~~