#include <bits/stdc++.h>
using namespace std;
int a, b;
int ships;
vector<int> shots;
int n;
int main() {
  string s;
  cin >> n >> a >> b >> n >> s;
  n = s.size();
  for (int l = 0; l < n;) {
    if (s[l] == '1') {
      l++;
      continue;
    }
    int r = l;
    while (r < n && s[r] == '0') r++;
    if (r - l >= b) {
      ships += (r - l) / b;
      int p = l;
      int o = r - l;
      while (o >= b) {
        shots.push_back(p + b);
        p += b;
        o -= b;
      }
    }
    l = r;
  }
  int x = ships - a + 1;
  cout << x << '\n';
  for (int i = 0; i < x; i++) cout << shots[i] << " ";
  cout << '\n';
  return 0;
}
