Eroare de compilare: main.cpp: In function 'int Hilbert(int, int, int)': main.cpp:15:9: error: 'ans' was not declared in this scope; did you mean 'abs'? 15 | ans += i * i * ((3 * ra) ^ rb); | ^~~ | abs main.cpp: In function 'int main()': main.cpp:31:13: error: 'hilbert' was not declared in this scope; did you mean 'Hilbert'? 31 | fout << hilbert((1 << k), a - 1, b - 1) << '\n'; | ^~~~~~~ | Hilbert Non zero exit status: 1