using python $.$

$..$

$$: $$ n $0($n$-1)$; $$

$..$

$0101.$

$100.$

$$ k $1.$

$2.$

$.().$

$$ n $$ k $$

$.$

$$:

k $$ n $$

$$ n $01$

$$:

$$

Constraints :

$2n25$

$1kn$

Input:

$82$

$0,0,1,0,0,1,1,0$

Output:

$92$

Input:

$4,2$

$0,0,1,0$

Output:

$96$