func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     long long int n, sum = 0;     vector<int> ans;     cin >> n;     cout << (n * (n + 1) / 2) % 2 <<   n ;     sum = n * (n + 1) / 4;     while (sum) {       if (n <= sum) {         sum -= n;         ans.emplace_back(n);       }       n--;     }     cout << ans.size() <<    ;     for (int i = 0; i < ans.size(); i++) cout << ans[i] <<    ;     cout <<   n ;     return 0;   }   