Compilare: user.cpp: In function ‘int DFS(int, int, int)’: user.cpp:31:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < G[nod].size(); i++) ^ user.cpp:30:9: warning: unused variable ‘j’ [-Wunused-variable] int j, i; ^ user.cpp:36:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:39:9: warning: unused variable ‘diam’ [-Wunused-variable] int diam = 1; ^