Reverse in Groups

You will be provided with N Numbers and an Integer K. You have to create a doubly linked list and then insert the given numbers into it. After Insertion, You have to reverse the newly formed Doubly Linked List in the Groups of Size 'K'.

Input Format

The First line will contain two Integers N and K. The Next line will contain N Integers separated by whitespaces.

Constraints

Print the Final content of the Doubly Linked List separated by space after performing above operation.

Output Format

1 <= N <= 10^1

1 <= K <= 10^1

N % K == 0

Sample TestCase 1

Input

6 2

10 20 30 40 50 60

Output

20 10 40 30 60 50

Sample TestCase 2

Input

12 2

10 20 30 40 50 60 70 80 90 2 11 12

Output

0

Sample TestCase 3

Input

11 2

10 20 30 40 50 60 70 80 90 2 11

Output

0

Explanation

First Group = (10, 20) -> (20, 10)

Second Group = (30, 40) -> (40, 30)

Third Group = (50, 60) -> (60, 50)

2nd test case Constraint N not satisfied so output should be 0

3rd test 11 mod 2 is not 0 constraint not satisfied