func_code_string: #include <bits/stdc++.h>   using namespace std;   bool f(int k, int n) {     int s = k;     while (k > 0) {       s += k % 10;       k /= 10;     }     return s == n;   }   int main() {     int i, n;     vector<int> ans;     cin >> n;     for (i = n - 100; i <= n + 100; ++i) {       if (f(i, n)) {         ans.push_back(i);       }     }     cout << ans.size() << endl;     for (i = 0; i < ans.size(); ++i) {       cout << ans[i] <<    ;     }     return 0;   }   