Compilare: user.cpp: In function ‘int main()’: user.cpp:96:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("peluzanord.in", "r", stdin); ^ user.cpp:97:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("peluzanord.out", "w", stdout); ^ user.cpp:100:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%lld%lld", &A, &B); ^ user.cpp: In function ‘long long int solve(long long int)’: user.cpp:29:63: warning: ‘sum_cif_init’ may be used uninitialized in this function [-Wmaybe-uninitialized] while (aux) v[++nr] = aux%10, aux/=10, sum_cif_init+=v[nr]; ^