Compilare: user.cpp: In function ‘long long unsigned int distsec(int)’: user.cpp:16:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i= 1 ; i <= n ; i++) ^ user.cpp:19:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(h.size()> nr) ^ user.cpp: In function ‘int main()’: user.cpp:35:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1 ; i <= n ; i++) ^ user.cpp:34:38: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%llu%llu%llu",&n,&u,&l); ^ user.cpp:36:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%llu",&v[i]); ^