#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, a, b, k;
  cin >> n >> a >> b >> k;
  string str;
  cin >> str;
  int nulls = 0;
  for (int i = n - 1; i >= 0 && a > 0; i--) {
    if (str.at(i) == '1')
      nulls = 0;
    else
      nulls++;
    if (nulls == b) {
      str.at(i) = '2';
      nulls = 0;
      a--;
    }
  }
  nulls = 0;
  vector<int> answ;
  for (int i = 0; i < n; i++) {
    if (str.at(i) == '2') {
      answ.push_back(i + 1);
      break;
    } else if (str.at(i) == '1')
      nulls = 0;
    else
      nulls++;
    if (nulls == b) {
      answ.push_back(i + 1);
      nulls = 0;
    }
  }
  cout << answ.size() << endl;
  for (int i = 0; i < answ.size(); i++) cout << answ.at(i) << ' ';
  return 0;
}
