Compilare: main.cpp: In function 'void dif(long long int)': main.cpp:13:10: warning: unused variable 'aux' [-Wunused-variable] ll i,aux; ^~~ main.cpp: In function 'int main()': main.cpp:41:32: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("sir.in","r",stdin); ^ main.cpp:42:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("sir.out","w",stdout); ^ main.cpp:46:42: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld%lld%lld%lld",&n,&x,&y,&z); ^ main.cpp:47:43: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] for (i=1;i<=n;i++) scanf("%lld",&v[i]); ^