func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n, k, sum = 0;     cin >> n >> k;     pair<int, int> p[n];     for (int i = 0; i < n; i++) {       cin >> p[i].first;       p[i].second = i + 1;     }     sort(p, p + n);     for (int i = 0; i < n; i++) {       k -= p[sum].first;       if (k >= 0)         sum++;       else         break;     }     cout << sum << endl;     for (int i = 0; i < sum; i++) {       cout << p[i].second <<    ;     }     return 0;   }   