Compilare: user.cpp: In function ‘int main()’: user.cpp:13:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=2;i*(i-1)<=k*2;i++); ^ user.cpp:15:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(m*(m+1)==k*2)q=1; ^ user.cpp:24:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<m+q&&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:12:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&k); ^