Compilare: user.cpp:4:36: warning: integer constant is so large that it is unsigned [enabled by default] const ull lmax=64+42,VAL=4,MAX_NUM=18446744073709551615; ^ user.cpp: In function ‘long long unsigned int query(long long unsigned int)’: user.cpp:42:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while((u3+1)*(u3+1)<=now/(u3+1))u3++; ^ user.cpp:43:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(u3*u3*u3==now-u3*u3)return u3; ^ user.cpp:44:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(u3*u3*u3==now-u3)return u3; ^ user.cpp:45:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(u3*u3*u3==now-1)return u3; ^ user.cpp:48:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(u2+1<=now/(u2+1))u2++; ^ user.cpp:49:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(u2*u2==now-u2||u2*u2==now-1)return u2; ^ user.cpp:49:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(u2*u2==now-u2||u2*u2==now-1)return u2; ^ user.cpp: In function ‘void pre()’: user.cpp:56:10: warning: unused variable ‘v2’ [-Wunused-variable] ull a,v1,v2; ^ user.cpp: In function ‘int main()’: user.cpp:99:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=n;i++) ^ user.cpp:89:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("bonus.in", "r", stdin); ^ user.cpp:90:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("bonus.out", "w", stdout); ^