Compilare: user.cpp: In function ‘void DFS(int)’: user.cpp:36:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v[point].size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:50:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &N, &M); ^ user.cpp:54:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &X, &Y); ^ user.cpp:64:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &X, &Y); ^