func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     long long int n, k;     cin >> n >> k;     vector<pair<long long int, long long int>> v;     for (long long int i = 0; i < n; i++) {       long long int x;       cin >> x;       v.push_back({x, i + 1});     }     sort(v.begin(), v.end());     vector<long long int> ans;     for (auto i : v) {       if (k >= i.first) {         ans.push_back(i.second);         k = k - i.first;       } else         break;     }     cout << ans.size() <<   n ;     for (auto i : ans) cout << i <<    ;     return 0;   }   