func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     ios_base::sync_with_stdio(0);     cin.tie(0);     long double a, b, c;     cin >> a >> b >> c;     vector<int_fast64_t> am;     int_fast64_t k = 1, max = pow(10, 9);     int_fast64_t f = pow(k, a) * b + c;     while (k <= 81 && f <= max) {       int_fast64_t sum = 0, n = f;       while (f != 0) {         sum += f % 10;         f /= 10;       }       if (sum == k) am.emplace_back(n);       k++;       f = pow(k, a) * b + c;     }     cout << am.size() <<   n ;     for (int_fast64_t i = 0; i < am.size(); i++) {       cout << am[i] <<    ;     }   }   