Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:12:2: error: ‘f’ was not declared in this scope f>>n>>k; ^ user.cpp:18:20: error: ‘val’ was not declared in this scope for(j=0;j<n;++j) val[j]=(val[j]*26+(str[j+i-1]-'a'+1))%MOD; ^ user.cpp:23:28: error: ‘col’ was not declared in this scope for(int pos=j+i;j<n&&col[pos]!=i&&val[pos]==val[j];pos+=j) ++nr_secv; ^ user.cpp:23:41: error: ‘val’ was not declared in this scope for(int pos=j+i;j<n&&col[pos]!=i&&val[pos]==val[j];pos+=j) ++nr_secv; ^ user.cpp:25:23: error: ‘result’ was not declared in this scope if (nr_secv>=k) result+=nr_secv-k+1; ^ user.cpp:29:8: error: ‘result’ was not declared in this scope cout<<result<<'\n'; ^