Compilare: user.cpp: In function ‘int main()’: user.cpp:27:18: warning: unused variable ‘t’ [-Wunused-variable] int n, i, j, t, d, k, cx, cy, nr_dame, x, y, x_aa, y_aa; ^ user.cpp:27:31: warning: unused variable ‘cy’ [-Wunused-variable] int n, i, j, t, d, k, cx, cy, nr_dame, x, y, x_aa, y_aa; ^ user.cpp:27:35: warning: unused variable ‘nr_dame’ [-Wunused-variable] int n, i, j, t, d, k, cx, cy, nr_dame, x, y, x_aa, y_aa; ^ user.cpp:24:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("betasah.in","r",stdin); ^ user.cpp:25:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("betasah.out","w",stdout); ^ user.cpp:29:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&n,&d,&k); ^ user.cpp:32:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&x,&y); ^ user.cpp:39:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&x,&y); ^