Compilare: user.cpp: In function ‘void DFS(int)’: user.cpp:56:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[node].size(); i++) ^ user.cpp:55:9: warning: unused variable ‘Max’ [-Wunused-variable] int Max = 0, father = 0; ^ user.cpp:55:18: warning: variable ‘father’ set but not used [-Wunused-but-set-variable] int Max = 0, father = 0; ^ user.cpp: In function ‘int main()’: user.cpp:90:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("arb2.out", "w", stdout); ^