func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     ios::sync_with_stdio(0);     cin.tie(0);     int k;     cin >> k;     if (k == 0) return cout <<  + n , 0;     vector<string> ats = { ++ ,  +* };     while (ats.size() < (1 << k)) {       auto cp = ats;       for (auto& s : cp)         for (auto& ch : s) ch = (ch ==  +  ?  *  :  + );       for (int i = 0; i < cp.size(); i++) {         ats.push_back(ats[i] + cp[i]);         ats[i] += ats[i];       }     }     for (auto& s : ats) cout << s <<   n ;   }   