Compilare: user.cpp: In function ‘void DFS(int, int)’: user.cpp:36:10: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(viz[*it]==0) ^ user.cpp: In function ‘int main()’: user.cpp:46:11: warning: unused variable ‘ord’ [-Wunused-variable] int i,ord=0,aux,x,h; ^ user.cpp:46:17: warning: unused variable ‘aux’ [-Wunused-variable] int i,ord=0,aux,x,h; ^ user.cpp:46:21: warning: unused variable ‘x’ [-Wunused-variable] int i,ord=0,aux,x,h; ^ user.cpp:46:23: warning: unused variable ‘h’ [-Wunused-variable] int i,ord=0,aux,x,h; ^