Eroare de compilare: main.cpp: In function 'void rec_drum(int, int, int, int)': main.cpp:25:5: error: 'fout' was not declared in this scope fout<<k*(k-1)*(2*k - 1)/6 + (i - 1) * k + j<<' '; ^~~~ main.cpp: In function 'int main()': main.cpp:40:5: error: 'fin' was not declared in this scope fin>>n; ^~~ main.cpp:54:5: error: 'fout' was not declared in this scope fout<<m<<' '<<d[1][1][1]<<endl; ^~~~ Non zero exit status: 1