Compilare: user.cpp: In function ‘void Read()’: user.cpp:31:13: warning: unused variable ‘x’ [-Wunused-variable] int x; ^ user.cpp: In function ‘void DFS(int)’: user.cpp:89:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[node].size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:114:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("curent.out","w",stdout); ^