#include <bits/stdc++.h>
using namespace std;
pair<int, int> a[100000];
int main() {
  int n, k;
  cin >> n >> k;
  for (int i = 0; i < n; i++) {
    int go;
    cin >> go;
    a[i].first = go;
    a[i].second = i;
  }
  sort(a, a + n);
  int an = 0;
  for (int i = 0; i < n; i++) {
    k -= a[i].first;
    if (k < 0) break;
    an++;
  }
  cout << an << endl;
  for (int i = 0; i < an; i++) {
    cout << a[i].second + 1 << " ";
  }
  cout << endl;
  return 0;
}
