func_code_string: #include <bits/stdc++.h>   int n, k, s, e, m, ans, temp, tp, tv;   bool m11, m22, first, b[100005], move;   char a[100005];   int dist() {     if (m - s < e - m)       return e - m;     else       return m - s;   }   int main() {     scanf( %d %d , &n, &k);     scanf( %s , a);     for (e = 0; e < n; e++) {       if (a[e] ==  0 ) temp++;       if (a[e] ==  0  && !first) s = e, first = true;       if (temp >= k + 1) break;     }     m = s;     ans = dist();     while (e < n) {       tv = dist();       tp = m;       move = false;       if (ans > dist()) {         ans = dist();       }       while (m <= e) {         m++;         if (a[m] ==  0 ) {           if (tv > dist()) {             tv = dist();             tp = m;             if (ans > dist()) {               ans = dist();             }           } else {             m = tp;             break;           }         }       }       while (e < n) {         e++;         if (e < n && a[e] ==  0 ) {           while (true) {             s++;             if (a[s] ==  0 ) {               if (m < s) {                 m = s;               }               move = true;               break;             }           }         }         if (move) break;       }     }     printf( %d n , ans);     return 0;   }   