Compilare: user.cpp: In function ‘int main()’: user.cpp:23:17: warning: unused variable ‘s’ [-Wunused-variable] ll n, i, j, s, t, d, k; ^ user.cpp:23:20: warning: unused variable ‘t’ [-Wunused-variable] ll n, i, j, s, t, d, k; ^ user.cpp:23:23: warning: unused variable ‘d’ [-Wunused-variable] ll n, i, j, s, t, d, k; ^ user.cpp:20:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("podm.in","r",stdin); ^ user.cpp:21:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("podm.out","w",stdout); ^ user.cpp:25:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld",&n); ^ user.cpp:26:54: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for( i = 1; i <= n + 1; ++i ) scanf("%lld",&a[i]); ^