func_code_string: #include <bits/stdc++.h>   using namespace std;   const int INF = 1000000007;   const long long INFLL = 1000000000000000000LL;   const int MAXN = 200009;   int m, x;   vector<int> weights;   stack<int> order;   void print() {     if (order.empty()) return;     int x = order.top();     order.pop();     print();     cout << x <<    ;   }   void solve(int bal, int step) {     if (step == m) {       cout <<  YES  << endl;       print();       exit(0);     }     if (abs(bal) >= 10) return;     for (int w : weights) {       if (step % 2 == 0) {         if (bal + w > 0 && (order.empty() || w != order.top())) {           order.push(w);           solve(bal + w, step + 1);           order.pop();         }       } else {         if (bal - w < 0 && (order.empty() || w != order.top())) {           order.push(w);           solve(bal - w, step + 1);           order.pop();         }       }     }   }   int main() {     ios::sync_with_stdio(0);     cin.tie(0);     for (int i = 1; i <= 10; i++) {       scanf( %1d , &x);       if (x == 1) weights.push_back(i);     }     scanf( %d , &m);     solve(0, 0);     cout <<  NO  << endl;   }   