#include <bits/stdc++.h>
using namespace std;
int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  long long n, k, len, p;
  cin >> n >> k >> len >> p;
  string s;
  cin >> s;
  s += "1";
  n += 1;
  long long maxx = 0, zero = 0;
  for (long long i = 0; i < n; i++) {
    if (s[i] == '0') {
      zero += 1;
    } else {
      maxx += zero / len;
      zero = 0;
    }
  }
  zero = 0;
  vector<long long> ans;
  for (long long i = 0; i < n; i++) {
    if (s[i] == '0') {
      zero += 1;
      if (zero % len == 0) {
        ans.push_back(i + 1);
        maxx -= 1;
        if (maxx < k) break;
      }
    } else
      zero = 0;
  }
  cout << ans.size() << "\n";
  for (auto i : ans) cout << i << " ";
  return 0;
}
