Compilare: user.cpp: In function ‘int main()’: user.cpp:24:37: warning: format ‘%lld’ expects argument of type ‘long long int*’, but argument 2 has type ‘int*’ [-Wformat=] scanf("%lld%lld",&x[i],&y[i]); ^ user.cpp:24:37: warning: format ‘%lld’ expects argument of type ‘long long int*’, but argument 3 has type ‘int*’ [-Wformat=] user.cpp:21:19: warning: unused variable ‘answer’ [-Wunused-variable] long long n,i,answer,area=0,onBoundary=0; ^ user.cpp:19:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("copaci.in","r",stdin); ^ user.cpp:20:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("copaci.out","w",stdout); ^ user.cpp:22:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld",&n); ^ user.cpp:24:38: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld%lld",&x[i],&y[i]); ^