Compilare: user.cpp: In function ‘int main()’: user.cpp:12:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(long long i=1;i<=n-x;i++) printf("%lld ",i); ^ user.cpp:18:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(long long i=n;i>n-x;i--) printf("%lld ",i); ^ user.cpp:19:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(long long i=n-x-1;i>n-t;i--) printf("%lld ",i); ^ user.cpp:7:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("farfurii.in","r",stdin); ^ user.cpp:8:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("farfurii.out","w",stdout); ^ user.cpp:9:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld %lld",&n,&k); ^