Compilare: user.cpp: In function ‘int main()’: user.cpp:12:20: warning: format ‘%llu’ expects argument of type ‘long long unsigned int*’, but argument 2 has type ‘int*’ [-Wformat=] scanf("%llu",&n); ^ user.cpp:14:20: warning: format ‘%llu’ expects argument of type ‘long long unsigned int*’, but argument 2 has type ‘int*’ [-Wformat=] scanf("%llu",&k); ^ user.cpp:16:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=2;i*(i-1)<=k*2;i++); ^ user.cpp:18:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(m*(m-1)>2*k)m--; ^ user.cpp:27:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<m&&i<n;i++) ^ user.cpp:10:37: 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:11:39: 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:12:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%llu",&n); ^ user.cpp:14:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%llu",&k); ^