#include <bits/stdc++.h>   using namespace std;   int n, a, b, k, cnt = 0, ans;   string s;   vector<int> arr;   int main(void) {     ios ::sync_with_stdio(0);     cin.tie(0);     cin >> n >> a >> b >> k >> s;     for (int i = 1; i <= n; ++i) {       if (s[i - 1] ==  0 ) {         ++cnt;       } else {         cnt = 0;       }       if (cnt == b) {         arr.emplace_back(i);         cnt = 0;       }     }     ans = int(arr.size()) - (a - 1);     cout << ans <<   n ;     for (int i = 0; i <= ans - 1; ++i) {       cout << arr[i] <<    ;     }     cout <<   n ;     return 0;   }   