Compilare: user.cpp: In function ‘void DFS(int)’: user.cpp:28:37: 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:71:36: warning: format ‘%i’ expects argument of type ‘int’, but argument 2 has type ‘long long int’ [-Wformat=] printf("%i\n", Val[1] % MOD); ^ user.cpp:36:43: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("divisorgraph.in", "r", stdin); ^ user.cpp:37:45: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("divisorgraph.out", "w", stdout); ^ user.cpp:39:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%i", &T); ^ user.cpp:45:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%i %i", &N, &M); ^ user.cpp:48:35: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%i %i", &X, &Y); ^