Compilare: user.cpp: In function ‘int main()’: user.cpp:9:47: warning: format ‘%lld’ expects argument of type ‘long long int’, but argument 2 has type ‘double’ [-Wformat=] printf("%lld",1LL*n*(n-1)*(n-2)*(n-3)/24.0); ^ user.cpp:6:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("puncte2.in","r",stdin); ^ user.cpp:7:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("puncte2.out","w",stdout); ^ user.cpp:8:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^