You are given an array $$$a$$$ consisting of $$$n$$$ integers. Initially all elements of $$$a$$$ are either $$$0$$$ or $$$1$$$. You need to process $$$q$$$ queries of two kinds:

1 x : Assign to $$$a_x$$$ the value $$$1 - a_x$$$.
2 k : Print the $$$k$$$-th largest value of the array.

As a reminder, $$$k$$$-th largest value of the array $$$b$$$ is defined as following:

Sort the array in the non-increasing order, return $$$k$$$-th element from it.

For example, the second largest element in array $$$[0, 1, 0, 1]$$$ is $$$1$$$, as after sorting in non-increasing order it becomes $$$[1, 1, 0, 0]$$$, and the second element in this array is equal to $$$1$$$.

Input

The first line contains two integers $$$n$$$ and $$$q$$$ ($$$1 \le n, q \le 10^5$$$) — the length of the given array and the number of queries.

The second line contains $$$n$$$ integers $$$a_1, a_2, a_3, \dots, a_n$$$ ($$$0 \le a_i \le 1$$$) — elements of the initial array.

Each of the following $$$q$$$ lines contains two integers. The first integer is $$$t$$$ ($$$1 \le t \le 2$$$) — the type of query.

If $$$t = 1$$$ the second integer is $$$x$$$ ($$$1 \le x \le n$$$) — the position of the modified number. You have to assign to $$$a_x$$$ the value $$$1 - a_x$$$.
If $$$t = 2$$$ the second integer is $$$k$$$ ($$$1 \le k \le n$$$) — you need to print the $$$k$$$-th largest value of the array.

It's guaranteed that there will be at least one query of the second type (satisfying $$$t = 2$$$).

Output

For each query of the second type, print a single integer — the answer to the query.

Note

Initially $$$a = [1, 1, 0, 1, 0]$$$.

The first operation is printing the third largest value, which is $$$1$$$.

The second operation is assigning $$$a_2$$$ the value $$$0$$$, $$$a$$$ becomes $$$[1, 0, 0, 1, 0]$$$.

The third operation is printing the third largest value, it is $$$0$$$.

The fourth operation is printing the first largest value, it is $$$1$$$.

The last operation is printing the fifth largest value, it is $$$0$$$.

K-th Largest Value

Examples