Compilare: user.cpp: In function ‘void Read(int*)’: user.cpp:54:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d", &n); ^ user.cpp:55:43: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] while (n --) scanf ("%d", &x), a[x] ++; ^ user.cpp: In function ‘int main()’: user.cpp:95:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("bacterii2.in", "r", stdin); ^ user.cpp:96:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("bacterii2.out", "w", stdout); ^ user.cpp:98:77: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d", &T), N = 1 << 16, invN = pow (N, mod - 2), FindPrimitiveRoot (); ^