func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int k;     cin >> k;     vector<vector<int> > v = {{1}};     for (int i = 0; i < k; i++) {       int current = v.size();       for (int j = 0; j < current; j++) {         vector<int> vnew(2 * current);         for (int l = 0; l < current; l++) {           vnew[l] = v[j][l];           vnew[current + l] = v[j][l];           v[j].push_back(-v[j][l]);         }         v.push_back(vnew);       }     }     for (int i = 0; i < v.size(); i++) {       for (int j = 0; j < v[i].size(); j++) {         cout << ((v[i][j] == 1) ?  +  :  * );       }       cout << endl;     }   }   