Compilare: user.cpp: In function ‘void con_sir(int, int)’: user.cpp:11:12: warning: unused variable ‘j’ [-Wunused-variable] int i, j; ^ user.cpp: In function ‘int main()’: user.cpp:29:15: warning: unused variable ‘j’ [-Wunused-variable] int n, i, j, t, d, k, ma; ^ user.cpp:29:18: warning: unused variable ‘t’ [-Wunused-variable] int n, i, j, t, d, k, ma; ^ user.cpp:29:21: warning: unused variable ‘d’ [-Wunused-variable] int n, i, j, t, d, k, ma; ^ user.cpp:29:27: warning: unused variable ‘ma’ [-Wunused-variable] int n, i, j, t, d, k, ma; ^ user.cpp: In function ‘void con_sir(int, int)’: user.cpp:14:42: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld%lld%lld%lld",&q,&x,&y,&z); ^ user.cpp: In function ‘int main()’: user.cpp:26:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("beri.in","r",stdin); ^ user.cpp:27:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("beri.out","w",stdout); ^ user.cpp:32:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&k); ^