#include <bits/stdc++.h>
using namespace std;
using ll = long long;
int main() {
  int n, a, b, k;
  cin >> n >> a >> b >> k;
  --a;
  int ans = 0;
  vector<int> ansv;
  for (int i = 0, c = 0; i < n; ++i) {
    char t;
    cin >> t;
    if (t == '0')
      ++c;
    else
      c = 0;
    if (c == b) {
      c = 0;
      if (a)
        --a;
      else
        ++ans, ansv.push_back(i + 1);
    }
  }
  cout << ans << endl;
  for (int x : ansv) cout << x << ' ';
}
