func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n, d, sum = 0;     cin >> n >> d;     vector<pair<int, int> > ins(n);     for (int i = 0; i < n; i++) {       cin >> ins[i].first;       ins[i].second = i + 1;     }     sort(ins.begin(), ins.end());     int i = 0;     while (i < n and ((sum + ins[i].first) <= d)) {       sum += ins[i].first;       i++;     }     cout << i << endl;     for (int j = 0; j < i; j++) {       if (j > 0) cout <<    ;       cout << ins[j].second;     }     return 0;   }   