Compilare: user.cpp: In function ‘void afiseazaGraf()’: user.cpp:36:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0 ; j < G[ i ].size(); j++) ^ user.cpp: In function ‘int main()’: user.cpp:128:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("biti.in","r",stdin); ^ user.cpp:129:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("biti.out","w",stdout); ^ user.cpp:130:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&N); ^