Compilare: user.cpp: In function ‘int main()’: user.cpp:17:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=k-dif;++i) printf("%d\n",i); ^ user.cpp:18:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=k-dif+1;i<=k;++i) printf("%d\n",i+1); ^ user.cpp:6:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("maxunice.in","r",stdin); ^ user.cpp:7:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("maxunice.out","w",stdout); ^ user.cpp:8:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld",&n); ^