func_code_string: #include <bits/stdc++.h>   using namespace std;   int main(int argc, char const *argv[]) {     long long x, d, k = 1;     cin >> x >> d;     vector<long long> ans;     while (x) {       long long rem = 0;       for (int i = 31; i >= 0; --i) {         if (x >> i & 1) {           long long tmp = i;           if (i == 0) {             ans.push_back(k);             rem--;           }           while (tmp--) ans.push_back(k);           k += d;           rem++;         }       }       x = rem;     }     cout << ans.size() << endl;     for (int i = 0; i < ans.size(); ++i) cout << ans[i] <<    ;     cout << endl;     return 0;   }   