func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int a, b;     cin >> a >> b;     vector<int> arr;     arr.push_back(b);     while (b > a) {       if (b % 10 == 1)         arr.push_back(b /= 10);       else if (b % 2 == 1) {         cout <<  NO  << endl;         return 0;       } else         arr.push_back(b /= 2);     }     if (arr.back() != a) {       cout <<  NO  << endl;       return 0;     }     cout <<  YES n  << arr.size() << endl;     for (auto it = arr.rbegin(); it != arr.rend(); ++it) cout << *it <<    ;   }   