You are given an array of $n$ integers. Your task is to calculate the mex of each window of $k$ elements, from left to right.

The mex is the smallest nonnegative integer that does not appear in the array. For example, the mex for $[3,1,4,3,0,5]$ is $2$ .

The first line contains two integers $n$ and $k$ : the number of elements and the size of the window.

Then there are $n$ integers $x_1,x_2,\ldots,x_n$ : the contents of the array.

• $1 \le k \le n \le 2 \cdot 10^5$
• $0 \le x_i \le 10^9$

Print $n-k+1$ values: the mex values.