Compilare: user.cpp: In function ‘void DF(int)’: user.cpp:27:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(pos[nod] < G[nod].size()) ^ user.cpp: In function ‘int main()’: user.cpp:47:25: warning: zero-length gnu_printf format string [-Wformat-zero-length] printf("",-1); ^ user.cpp: In function ‘void Read()’: user.cpp:15:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ciclueuler.in","r",stdin); ^ user.cpp:16:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%i %i",&n,&m); ^ user.cpp:19:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%i %i",&u[i], &v[i]); ^ user.cpp: In function ‘int main()’: user.cpp:52:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ciclueuler.out","w",stdout); ^