Compilare: user.cpp: In function ‘void DFS(int)’: user.cpp:23:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < adjNext[Node].size(); i++) { ^ user.cpp: In function ‘int main()’: user.cpp:31:21: warning: unused variable ‘Node’ [-Wunused-variable] int N, i, A, B, Node, nSon; ^ user.cpp:31:27: warning: unused variable ‘nSon’ [-Wunused-variable] int N, i, A, B, Node, nSon; ^